|Genre||Touring Cars and Commercial Cars|
|Founder||Benjamin A. Gramm|
|Successor||Gramm-Logan Motor Car Company|
Benjamin A. Gramm was the designer of the Buckeye and Gramm automobiles before entering production with the Logan in 1904. Logan's were 2-cylinder air-cooled and water-cooled touring cars before standardizing with a 4-cylinder air-cooled car in 1906.
In 1907 a runabout model called the Blue Streak semi-racer was introduced with a 24-hp engine. This sold for $1,750, (equivalent to $54,963 in 2022). A truck producer along with automobiles, a new company was formed to concentrate on truck manufacturing in 1908. Gramm trucks built up to 1940.
- "American Automobiles - Manufacturers". Farber and Associates, LLC - 2011. Retrieved August 27, 2011.
- "Transportation in Chillicothe, Ohio". Waverly City Guide - 2011. Retrieved August 27, 2011.
- "Auto-Truck Makes Good Showing" (PDF). The New York Times, May 3, 1908. May 3, 1908. Retrieved August 27, 2011.
- Logan. Modern Motor Cars, March 1906, pg.109. 1905. Retrieved August 27, 2011.
- Kimes, Beverly Rae; Clark Jr., Henry Austin (1996). Standard Catalog of American Cars 1805-1942 (3rd ed.). Krause Publications. ISBN 978-0-87341-428-9.