Digital Maps and Geospatial Data | Princeton University
Cram's detailed radio map of the United States & Canada
- George F. Cram Company
- Indianapolis : George F. Cram Co., 
- Inset map: North America. Scale 1 in.=600 mi. Relief shown in hachures. Cover title: Radio map of the United States, published by the George F. Cram Company for Morton Salt Company ... revised to Dec. 5 1926. Shows time zones. Includes listings of radio stations by place and by call letters. Includes advertisement for Morton's Salt.
- United States and Canada
- Radio stations—United States—Maps, Radio stations—Canada—Maps, and Thematic maps—United States—1926
- Call number:
- Held by:
- Princeton: Historic Map Division, Special Collections, Firestone Library
- Rights Statement:
- No Known Copyright
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