Author
Commercial Museum (Philadelphia, Pa.)
3
Philadelphia Board of Trade
3
Commercial Exchange of Philadelphia (Pa.)
2
Corn Exchange National Bank
2
Federacji Zrzeszen Kupieckich i Przemysłowych w Ameryce
2
Norges eksportråd
2
Norges oplysningskontor for næringsveiene
2
Pennsylvania. Bureau of International Commerce
2
Philadelphia Bourse
2
Philadelphia Maritime Exchange
2
Chamber of Commerce of the United States of America
1
Corn exchange
1
German American Chamber of Commerce
1
German American Chamber of Commerce of Chicago
1
Gesellschaft zur Förderung des Deutsch-Amerikanischen Handels
1
National Trade Acceptance Bureau, Inc
1
Pennsylvania Chamber of Commerce (Harrisburg, Pa.)
1
Pennsylvania. Department of Commerce
1
United States. Department of the Treasury. Bureau of Statistics
1