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BUCHANAN, CHARLES GORDON, Mechanical Engineer, 167 North Munn Avenue,
East Orange, New Jersey.
BUCK, H. W., Consulting Engineer, 49 Wall Street, New York City, New York.
BUDD, A. Van WYCK, Berwyn, Prince George County, Maryland

BUDD, EDWARD G., Machinist, 502 Westview Street, Germantown, Philadelphia, Penn-
sylvania
BULLOCK, WILLIAM E., Mechanical Engineer, 29 West 39th Street, New York City,
New York.

BUNNELL, STERLING H., Consulting Mechanical Engineer, 103 Park Avenue, New
York City, New York.

BUREAU, E. W., Bronze Founder, S. E. Corner 23rd and Westmoreland Streets, Philadelphia, Pennsylvania. BURGESS, WILLIAM J., 940 South 55th Street, Philadelphia, Pennslyvania.

BURHORN, EDWIN, Engineer and Contractor, 938 Hudson Street, Hoboken, New Jersey.

BURK, CHARLES A. D., Physical Chemist and Inventor, 401 Santa Rita Apartments, Atlantic City, New Jersey.

BURLINGAME, LUTHER D., Industrial Superintendent, Brown and Sharpe Manufacturing Company, Providence, Rhode Island.

BURNHAM. GEORGE JR. (Retired), 1400 Morris Building, Philadelphia, Pennsylvania. BURROUGHS, JOSEPH H., Attorney-at-Law, 612 Bullitt Building, Philadelphia, Pennsylvania.

BURT, MILO C.. Chemist, 636 Water Street, Bridgeport, Connecticut.

BURTON, THOMAS L., Consulting Engineer, Westinghouse Air Brake Company, 165 Broadway, New York City, New York.

BUSH. S. P.. Manufacturer, The Buckeye Steel Castings Company, Columbus, Ohio. BUSSER, FRANK S., Attorney-at-Law, 926 Land Title Building, Philadelphia, Penn

sylvania.

BUXTON, GEORGE E., Industrial Engineer, 322 King Street, Pottstown, Pennsylvania. BYERS, ISAAC W., (Retired), Iron River, Michigan.

BYRD. JOHN, Metal Worker. Address unknown.

BYRNES, FRANK, Clerk, 535 West Montgomery Avenue, Philadelphia, Pennsylvania. CABOT, GEORGE E., 60 State Street. Boston, Massachusetts.

CADWALDER. Major GOUVERNEUR, Manufacturer, O. O. R. C., Fort Washington, Pennsylvania.

CAIRD, JAMES M., Chemist and Bacteriologist, Proctor's Building, 92 Fourth Street, Trov, New York.

CALKINS, G. H., Manager, General Electric Campany, Tenth Floor, Electric Building, Buffalo, New York.

CALVERT, HAROLD, Electrical Engineer, President, Baird-Osterhout Company, 2114 Sansom Street. Philadelphia, Pennsylvania.

CAMERON, Dr. FRANK K., Consulting Chemist, 46 Bransford Apartments, Salt Lake City, Utah.

CANBY, WILLIAM W.. Fruit Grower, Grants Pass, Oregon.

CANFIELD, FREDERICK A.. Mining Engineer, Dover, New Jersey.

CAPLES. MARTIN J., Vice President Seaboard Airline Railway Company, and for mail, 701 Stockley Gardens, Norfolk, Virginia.

CAPP, JOHN A.. Mechanical Engineer, 62 Bedford Road, Schenectady, New York. CAPP, S. BUNKER, Capitalist, P. O. Box 2054, Philadelphia, Pennsylvania.

CAPPS. W. L.. Rear Admiral, U. S. N., Chief Constructor, Bureau of Construction and Repair, Navy Department, Washington, D. C.

CARTER, EDWARD C., Consulting Engineer, 412 Greenwood Boulevard, Evanston,

Illinois.

CARTY, Brig. General JOHN J.. Vice President and Chief Engineer, American Telephone
and Telegraph Company, 195 Broadway, New York City, New York.
CASACOF, CHRISTO, Mechanical Engineer, 104 West 79th Street, New York City,
New York.

CASPARI, Dr. CHARLES E., Professor of Chemistry, 2108 Locust Street, St. Louis,
Missouri.

CASSELMAN, WILLIAM S., Attorney-at-Law, Secretary, West Jersey Title and Guarantee Company, and for mail, 317 Penn Street, Camden, New Jersey. CATHERWOOD, WILSON, Merchant, 1708 Walnut Street, Philadelphia, Pennsylvania. CHAFFEE, E. LEON, Assistant Professor of Physics, Cruft Laboratory, Cambridge, Massachusetts.

CHAMBERLAIN, G. E., Engineer, 1650 East William Street, Decatur, Illinois. CHAMBERS, Dr. ARTHUR DOUGLAS, Chemical Engineer, E. I. du Pont de Nemours and Company, and for mail, R. F. D. 1, Edgemoor, Delaware.

CHAMBERS, FRANCIS T., Attorney-at-Law, 605-608 New Stock Exchange Building, 1411 Walnut Street, Philadelphia, Pennsylvania.

CHAMBERS. J. HOWARD, Chambers Brothers Company, Founders and Machinists, and for mail, 52nd and Media Streets, Philadelphia, Pennsylvania.

CHANCE, Dr. EDWIN M., Consulting Chemist and Engineer, 105 Sacramento Street, Atlantic City, New Jersey.

CHANCE, Dr. HENRY M., Mining Engineer and Geologist, 839 Drexel Building, Philadelphia, Pennsylvania.

CHANDLER, CHARLES F.. Emeritus Professor of Chemistry, Columbia University. New York City, New York.

CHANDLER, T. P., Architect, address unknown.

CHARLETON, RICHARD C., 5017 Franklin Street, Frankfort, Philadelphia, Pennsylvania.

CHESTERMAN, FRANCIS J.. Chief Engineer, The Bell Telephone Company, 261 North Broad Street, Philadelphia, Pennsylvania.

CHRISMAN, CHAS. S., Mechanical Engineer. The United Gas Improvement Company, 435 West Miner Street, West Chester, Pennsylvania.

CHRISTIANSON, A., Chief Engineer, Standard Steel Car Company, and for mail, P. O. Box 877 Butler, Pennsylvania.

CHURCH, ARTHUR L., Assistant to the President, The Baldwin Locomotive Works, 500 North Broad Street. Philadelphia, Pennsylvania.

CLAGHORN, CLARENCE R., Mining Engineer, 715 Continental Building, Baltimore, Maryland.

CLAMER, F. J. (Retired), Collegeville, Montgomery County, Pennsylvania.

CLAMER, G. H., Metallurgist and Chemist, First Vice President and Secretary, The Ajax Metal Company, Frankford Avenue and Richmond Street, Philadelphia, Pennsylvania.

CLARK A. WAYNE, Chemist, in care of Johnson and Johnson, New Brunswick, New Jersey.

CLARK BEAUVAIS, Stenton and Abington Avenues, Chestnut Hill, Philadelphia, Penn

sylvania.

CLARK, Miss DARTHELA, Stenton and Abington Avenues, Chestnut Hill, Philadelphia, Pennsylvania.

CLARK, EDWARD B., Lieut.-Colonel, Publisher, 61 Cedar Street, Chicago, Illinois. CLARK. EDWARD L., Chief Engineer, Commercial Truck Company, Hunting Park and Rising Sun Avenues, Philadelphia, Pennsylvania.

CLARK, E. W.. Banker, 321 Chestnut Street. Philadelphia, Pennsylvania. CLARK, FRANK H., Consulting Engineer and Technical Advisor, Tuscany Apartments, 40th and Stony Run Roads, Baltimore, Maryland.

CLARK. FRANK SHAW, Mechanical Engineer, Stone and Webster Engineering Corporation. 147 Milk Street, Boston, Massachusetts.

CLARK, JOSEPH S., Attorney-at-Law, Highland Avenue, Chestnut Hill, Philadelphia,
Pennsylvania.
CLARK, THEOBALD F., 2300 Pine Street. Philadelphia, Pennsylvania.

CLARK. WALTON, Consulting Engineer, The United Gas Improvement Company, and
for mail, Stenton and Abington Avenues, Chestnut Hill, Philadelphia, Pennsylvania.
CLARK. Mrs. WALTON, Stenton and Abington Avenues, Chestnut Hill, Philadelphia,
Pennsylvania.

CLARK. WALTON. Jr., Attorney-at-Law, Stenton and Abington Avenues, Chestnut Hill, Philadelphia, Pennsylvania.

CLOUD. JOHN W., Chairman, The Westinghouse Brake and Saxby Signal Company, Limited, 82 York Road. King's Cross, London, N. I England. CLYMER EVAN MORGAN, Chief Clerk, Inspector of Hull Material for U. S. Navy, and for mail, 142 East Fishers Avenue, Olney. Philadelphia, Pennsylvania. COATES. JESSE, Consulting Engineer, and Metallurgist, 40 Ocean Avenue, Lynn, Massachusetts.

COCHRAN, C. B., Chemist. State Dairy and Food Commission, and for mail, 514 South High Street, West Chester. Pennsylvania.

COCKERILL. H. W., Technical Clerk, 19 Rata Road. Hataitai, Wellington, New Zealand. COES. HAROLD V., Industrial Engineer, 5901 Wayne Avenue, Germantown, Philadelphia, Pennsylvania.

COFFIN, C. A., Chairman of the Board, General Electric Company, 120 Broadway, New York City, New York.

COLBY. ALBERT LADD, Consulting Engineer, 447 Brighton Street, Bethlehem, Pennsylvania.

COLE, FRANCIS J.. Chief Consulting Engineer, American Locomotive Company, and for mail. 640 South Hill Avenue, P. O. Box 459, Pasadena, California. COLLINGWOOD, J. REED, Buyer, Fels and Company, and for mail, 510 South 41st Street, Philadelphia, Pennsylvania.

COLLINS, ARTHUR L.. Test Engineer, Abington, Pennsylvania.

COLLINS CHARLES RUSSELL, Consulting Engineer, 805 Lowman Building, Seattle,

Washington.

COLLINS, HENRY H., Manufacturer, 226 Columbia Avenue, Philadelphia, Pennsylvania. COLLOM, SAMUEL H., President, Pennsylvania Flexible Metallic Tubing Company, 505 Abbott Building, Philadelphia, Pennsylvania.

COLTON, SABIN W., JR., (Retired), Banker, Bryn Mawr, Pennsylvania.

COLVIN, CHARLES H.. Mechanical Engineer, 61 Poplar Street. Brooklyn, New York. COLVIN, FRED H., Editor and Mechanical Engineer, 56 North Maple Avenue, East Orange, New Jersey.

COLVIN, HENRY FRED, 2nd, Student, 56 North Maple Avenue, East Orange, New Jersey.

COLWELL, ROBERT C., Professor of Physics, Geneva College, and for mail, 3101 College Avenue, Beaver Falls, Pennsylvania.

COMER, HARRIS, Chemist, Manufacturer of Scientific Apparatus, 622 South Washington Square, Philadelphia, Pennsylvania, and for mail, 431 State Road, Cynwyd, Pennsylvania.

COMEY, Dr. ARTHUR M., Chemist, 380 Mt. Auburn St., Cambridge, Massachusetts. CONAWAY, JOHN F., Secretary and Treasurer, National Umbrella Frame Company, 30th and Thompson Streets, Philadelphia, Pennsylvania.

CONDICT, G. H., Consulting Mechanical and Electrical Engineer, 922 Central Avenue, Plainfield, New Jersey.

CONN, CHARLES F., President, Giant Portland Cement Company, Pennsylvania Building, Philadelphia, Pennsylvania.

CONNABLE, FRANK L., Vice President, E. I. du Pont de Nemours and Company, 622 du Pont Building, Wilmington, Delaware.

CONVERSE, WILLIAM A., Chemical Engineer, Dearborn Chemical Company, McCormick Building, Chicago, Illinois.

COOKE, MORRIS LLEWELLYN, Consulting Engineer in Management, Acting Director, The Utilities Bureau, 1009 Finance Building, and for mail, 401 West Walnut Lane, Germantown, Philadelphia, Pennsylvania.

COOLEY, MORTIMER E., Dean, Colleges of Engineering and Architecture, Engineering Building, University of Michigan, Ann Arbor, Michigan.

COOPER, HENRY, Manufacturer of Olive Oil, 403 East Valerio Street, Santa Barbara,

California.

COPE, THOMAS D., Assistant Professor of Physics, Randal Morgan Laboratory of Physics, University of Pennsylvania, Philadelphia, Pennsylvania.

COPPAGE, BENJAMIN DENVER, Production Engineer, Levgor Structural Company, New York City, and for mail, 2402 Willard Street, Wilmington, Delaware. COPPAGE, G. L., Assistant Works Manager, The Pusey and Jones Company, Wilmington, Delaware.

CORNELIUS, CLARENCE E., Salesman, 162 West Coulter Street, Germantown, Philadelphia.

CORNELIUS, JOHN C., Jr., Architect, 420 West Price Street, Germantown, Philadelphia, Pennsylvania.

CORNELIUS, JUSTICE C., Civil Engineer, 821 Lehigh Street, Easton, Pennsylvania. COSTER, EDWARD L., Literary Mechanical Engineer, Katonah, New York.

COTTRELL, JAMES W., Dealer in Automobiles, P. O. Box 302, Hammonton, New Jersey.

COWAN, HENRY B., District Engineer, 502 North 39th Street, Philadelphia, Pennsyl

vania.

COWAN, WILLIAM ARTHUR, Assistant Chief Chemist, National Lead Company, 129 York Street, Brooklyn, New York.

COWLES, ALFRED H., President, Electric Smelting and Aluminum Company, Sewaren, New Jersey.

COX, J. D., President, Cleveland Twist Drill Company, Cleveland, Ohio.

COX, JOHN L., Mechanical Engineer, 12 Summit Street, Chestnut Hill, Philadelphia, Pennsylvania.

COX, WALTER, President, Pennsylvania Wire Glass Company, Pennsylvania Building, Philadelphia, Pennsylvania.

COXE, ALEXANDER BROWN, Agriculturist, Paoli, Pennsylvania.

CRAGO, WILLIAM H., Civil Engineer, in care of Fajardo Sugar Company, Fajardo, Porto Rico.

CRAMP, FRANCIS L., Assistant to President, Wm. Cramp & Sons, Ship and Engine Building Company, Philadelphia, Pennsylvania.

CRAMP, THEODORE W., Ship Builder, 816 Commercial Trust Building, Philadelphia, Pennsylvania.

CRAMPTON, GEORGE S., Physician, 1819 Walnut Street, Philadelphia, Pennsylvania. CRAWFORD, D. F., General Manager, Pennsylvania Lines West of Pittsburgh, 5243 Ellsworth Avenue, Pittsburgh, Pennsylvania.

CREIGHTON, H. JERMAIN, Assistant Professor of Chemistry, Swarthmore College, Swarthmore, Pennsylvania.

CRENSHAW, Dr. JAMES L., Professor of Physical Chemistry, Bryn Mawr, Pennsylvania.

CRISFIELD, J. A. P., Mechanical Engineer, The United Gas Improvement Company,
Broad and Arch Streets, Philadelphia, Pennsylvania.
CROASDALE, JOHN P., Attorney-at-Law, 1011 Chestnut Street, Philadelphia, Penn-
sylvania.
CROOK, ALFRED, Vice President and General Manager, Philadelphia Roll and Machine
Company, 25th Street and Washington Avenue, Philadelphia, Pennsylvania,
CROSMAN, J. HERON, JR., Assistant Vice-president, The Bell Telephone Company of
Pennsylvania. 1631 Arch Street, Philadelphia, Pennsylvania.

CROWELL, WALTER S., Chemical Engineer, Oak Lane, Philadelphia, Pennsylvania.
CULLEN, GEORGE S., Insurance, 4504 Springfield Avenue. Philadelphia, Pennsylvania.
CUMMINGS, J. H., President, John B. Stetson Company, Philadelphia, Pennsylvania.
CUNNINGHAM. J. L., Superintendent of Motive Power, Pennsylvania Railroad Com-
pany, Pittsburgh, Pennsylvania.

CURRAN, G. W., Secretary, The United Gas Improvement Company, Broad and Arch Streets, Philadelphia, Pennsylvania.

CURTIS, CYRUS H. K., Curtis Publishing Building, Philadelphia, Pennsylvania. CURTISS, ELLIOTT, President and Treasurer, The United States Metallic Packing Company, 429 North 13th Street, Philadelphia, Pennsylvania.

CURWEN, SAMUEL M., President, J. G. Brill Company, and for mail, Haverford, Penn

sylvania.

CUSHMAN, Dr. ALLERTON S., Director, The Institute of Industrial Research, 1845 B Street, N. W., Washington, D. C.

DACOSTA, J. CHALMERS, 3rd, Mechanical Engineer, Phoenix Mutual Life Insurance Company, 603 Finance Building, Philadelphia, Pennsylvania.

DAILY, FRANCIS X., Engineer, The Bell Telephone Company of Pennsylvania, and for mail, 109 St. Pauls Road, Ardmore, Pennsylvania.

DANNENBAUM, HERMAN N., Manufacturer, Vice President, National Ammonia Company, 109 St. Pauls Road, Frankford, Philadelphia, Pennsylvania.

DASHIELL, BENJ. J., Consulting Engineer, Dunkirk P. O. Calvert County, Maryland. DASHIELL, P. T., Assistant Engineer of Works, The United Gas Improvement Company, Broad and Arch Streets, Philadelphia, Pennsylvania.

DAVIDS, R. W., Consulting Electrical Engineer, Merion Station, Pennsylvania.

DAVIDSON, GEORGE M., Chemist and Engineer of Tests, C. & N. W. R. R. Company, Chicago, Illinois.

DAVIS, CARLETON E., Civil Engineer, 113 Monument Circle, Indianapolis, Indiana. DAVIS, CHARLES HENRY, President and Trustee, Bass River, Cape Cod, Massa

chusetts.

DAVIS, ERNEST H., Manager of Street Railways and Electric Light Plants, P. O. Box 424, Williamsport, Pennsylvania.

DAWES, JAMES H., General Contractor, 1310 Arch Street, Philadelphia, Pennsylvania. DAY, Dr. ARTHUR L., Director Geophysical Laboratory, Carnegie Institution, Washington, D. C.

DAY, CHARLES, Member of Firm, Day and Zimmermann, Engineers, 1600 Walnut
Street, Philadelphia, Pennsylvania.

DAY, DAVID T., Petroleum Expert, 715 19th Street, N. W., Washington, D. C.
DAY, R. H., Steel Manufacturer, 505 W. Clapier Street, Philadelphia, Pennsylvania.
DE GRAAFF, ANTONIUS, Chemical Engineer, Philips' Glowlampworks, Ltd., Eind-
hoven, Holland.

DELANO, FREDERIC A., Receiver, 288 Treasury Building, Washington, D. C.
DELANY, PATRICK B., Electrical Engineer, South Orange, New Jersey.
DELBRIDGE, THOMAS D., Chemist, Atlantic Refining Company, 3144 Passyunk
Avenue, Philadelphia, Pennsylvania.

DELLENBAUGH, FREDERICK S., JR., Electrical Engineer, Massachusetts Institute
of Technology, and for mail, 91 Spooner Road, Chestnut Hill, Massachusetts.
DEMPSEY, W. L., Engineer and Attorney-at-Law, 618 Perry Building, Philadelphia,
Pennsylvania.

DENIG, FRED., Combustion Engineer, The Koppers Company, Union Arcade, Pittsburgh, Pennsylvania.

DESHONG, HOWARD T., Superintendent, Philadelphia Electric Company, and for mail, 9 Lansdowne Avenue, Lansdowne, Pennsylvania.

DETWILER, J. G., Chemist, Room 913, The Texas Company, Houston, Texas. DICKERSON, EDWARD N., Attorney-at-Law, 41 Park Row, New York City, New York.

DIDIER, PAUL, Principal Assistant Engineer, Baltimore and Ohio Railroad Company, Conestoga Building, Wood and Water Streets, Pittsburgh, Pennsylvania. D'INVILLIERS, EDWARD VINCENT, Geologist and Mining Engineer, 518 Walnut Street, Philadelphia, Pennsylvania.

DISSTON, WILLIAM D., Manufacturer, in care of Henry Disston & Sons, Tacony, Philadelphia, Pennsylvania.

DIVEN, J. M., Secretary, American Water Works Association, 153 West 71st Street. New York City, New York.

DOANE, SAMUEL E., Chief Engineer National Lamp Works of the General Electric Company, Nela Park, Cleveland, Ohio.

DODGE, KERN, Consulting Engineer, Morris Building, Philadelphia, . Pennsylvania. DOHERTY, HENRY L., President, Cities Service Company, 60 Wall Street, New York City, New York.

DOLAN, THOMAS J., Chestnutwold Farm, Devon, Pennsylvania.

DONALD, JAMES, Naval Architect, Liverpool, England.

DONALD, WILLIAM, Chemist and Assayer, Bloomingdale, New Jersey.

DONOHOE, JOHN P., Coal Operator, Coulter Building, Greensburg, Pennsylvania.

DORNER, WILLIAM F., 25th Ward Gas Works, Richmond and Tioga Streets, Philadelphia, Pennsylvania.

DORR, JOHN V. N., Metallurgical and Chemical Engineer, President, The Dorr Company, Westport, Connecticut.

DOUREDOURE, BERNARD L., Student, 103 Walnut Street, Philadelphia, Pennsylvania.
DOUTHIRT, WALSTEIN F., 1752 Equitable Building, New York City, N. Y.
DOW, HERBERT H., General Manager, The Dow Chemical Company, Midland, Michi-

gan.

DOYLE, WILLIAM J., Contractor and Builder, 1519 Sansom Street, Philadelphia, Pennsylvania.

DRAKE, LEWIS MARVIN, Experimental Scientist, West Fairview Avenue, Daytona, Florida.

DREXEL, JOHN R., 112 Drexel Building, Philadelphia, Pennsylvania.

DUBOSQUE, F. L., Superintendent of Floating Equipment, Pennsylvania Station, New York City, New York.

DUNCAN, J. S., Inventor, 901 West Van Buren Street, Chicago, Illinois.

DUNCAN, THOMAS, President, Duncan Electric Manufacturing Company, Lafayette,

Indiana.

DUNDORE, CHARLES R., 8205 Seminole Avenue, Philadelphia, Pennsylvania.
DUNN, GANO, President, J. G. White Engineering Corporation, and for mail, 20
Washington Square, New York City, New York.

DUNNINGTON, F. P., Professor of Chemistry, University of Virginia, Virginia.
DUPONT, COLEMAN. 808 Broome Street, Wilmington, Delaware.

DUPONT, IRENEE, Vice President, E. I. Du Pont de Nemours and Company, Wilming. ton, Delaware.

DUPONT, PIERRE S., President, E. I. du Pont de Nemours and Company, Wilmington,

Delaware.

DURBAN, THOMAS E.. General Manager, Erie City Iron Works, Erie, Pennsylvania.
D'UTASSY, GEO., Publisher, Cedarhurst, Long Island, New York.
EARNSHAW, WARNER G., Harrison Building, Philadelphia, Pennsylvania.

EASON, JOHN STUART, Manufacturer and Industrial Engineer, 740 58th Street,
Milwaukee, Wisconsin.

EATON, ROLAND L., 20 South Eighteenth Street, Philadelphia, Pennsylvania. EAVENSON, HOWARD N., Engineer, 4311 Bayard Street, Pittsburgh, Pennsylvania. EBERLE, E. G., Editor, Journal of the American Pharmaceutical Association, Room 253, Bourse Building, Philadelphia, Pennsylvania.

ECKERT, SAMUEL B., Oil Refiner, Finance Building, 1428 South Penn Square, Philadelphia, Pennsylvania.

ECKHARDT, E. A., Physicist, Bureau of Standards, Washington, D. C.

EDGAR, C. L., President and General Manager, Edison Electric Illuminating Company, 70 State Street, Boston, Massachusetts.

EDISON, THOMAS A., Inventor, Orange, New Jersey.

EGLIN, W. C. L., Vice President and Chief Engineer, Philadelphia Electric Company, 1000 Chestnut Street. Philadelphia, Pennsylvania.

EGLOFF. Dr. GUSTAV, Petroleum Technologist, 344 South Hamline Avenue, Chicago,
Illinois.
EHRENFELD, Dr. FREDERICK, College Hall, University of Pennsylvania, Philadelphia,

Pennsylvania.

EHRET. CORNELIUS D., Patent Lawyer, 6911 Clearview Street, Mount Airy, Philadelphia, Pennsylvania.

ELDRED, Dr. BYRON E., 41 East 42nd Street, New York City, New York.
ELKINS, GEORGE W., Vice President of Companies, Land Title Building, Philadelphia,
Pennsylvania.

ELKINTON, HOWARD W., Assistant Manager, Foreign Department, Philadelphia
Quartz Company, 121 South Third Street, Philadelphia, Pennsylvania.

ELKINTON, THOMAS W., Philadelphia Quartz Company, 121 South Third Street, Philadelphia, Pennsylvania.

ELLIOT, EDWIN, Foundry Superintendent, 403 West Price Street, Germantown, Philadelphia, Pennsylvania.

ELLIS, CARLETON, Research Chemist and Chemical Engineer, 92 Greenwood Avenue, Montclair, New Jersey.

ELLIS, HALCOLM, Mechanical Engineer, Fabrique Nationale d'Armes de Guerre, Herstal-les Liege, Belgium.

ELMENDORF, ARMIN, Consulting Engineer, Vickers House, Broadway, Westminster, London, S. W. I., England.

ELVERSON, JAMES, Jr., Publisher, The Philadelphia Inquirer, Philadelphia, Pennsylvania.

EMERICK, J. M., Office Manager, 1501 Commonwealth Building, Philadelphia, Pennsylvania.

EMERSON, GEORGE H., Chief of Motive Power and Equipment, Baltimore and Ohio Railroad, Baltimore, Maryland.

EMERSON, HARRINGTON, Efficiency Engineer, Room 1522, Hudson Terminal Building, 30 Church Street, New York City, New York.

EMERY, A. H., Civil and Mechanical Engineer, Glenbrook, Connecticut.

ENGELHARD, CHARLES, Importer, Hudson Terminal Building, 30 Church Street, New York City, New York.

EPPELSHEIMER, DANIEL, JR., Chief Engineer, 419 Broadway, Middletown, Ohio. ERHART, WILLIAM H., Manufacturing Chemist, 81 Maiden Lane, New York City, New York.

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