Placement Company
- General Outdoor Advertising Company22
- R. C. Maxwell Company19
- United Advertising Corporation13
- Gannett Outdoor10
- Foster & Kleiser8
- Knoxville Poster Advertising Co.7
- Lamar5
- Creative4
- Rollins4
- Lewis3
- Lindy Advertising Service3
- Pittsburgh Outdoor Advertising Co.3
- Flack2
- Morton Company2
- Naegele2
- Pacific Outdoor Advertising Co.2
- State Outdoor2
- illegible2
- Alpha1
- Carey1
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