Company
- U. S. Government32
- U. S. Treasury Dept.27
- War Advertising Council17
- War Production Board15
- NA9
- International Business Machines Corp.6
- Timken Roller Bearing Company6
- Bowery Savings Bank5
- Caterpillar Tractor Co.5
- Electric Auto-Lite Company5
- Knott Hotels5
- Bankers Trust Company4
- Goodyear4
- Stewart-Warner Corporation4
- Best & Co.3
- Calvert Distillers Corp.3
- F. & M. Schaefer Brewing Co.3
- Felt & Tarrant Manufacturing Co.3
- General Motors Corp.3
- Hiram Walker & Sons, Inc.3
The preservation of the Duke University Libraries Digital Collections and the Duke Digital Repository programs are supported in part by the Lowell and Eileen Aptman Digital Preservation Fund