- Inter-State Automobile Company
- Indiana Memory
- Indiana State Library
Trade Catalog from the Inter-State Automobile Company, which advertises and lists technical specifications of vehicles they sold, including the Model 34 Torpedo, Model 31A Demi-Tonneau, Forty Touring Car Model 39A, Forty Roadster Model 32A Single Rumble and Model 33A Double Rumble, as well as brief info on newer models 30A, 31A, 32A, 33A, and 34.
- United States
- Trade catalog