Carroll & Graf · McFarland & Company
| title | media type | ISBN-13 (ISBN-10) | year of publication |
|---|---|---|---|
| Following in Lincoln's Footsteps: A Complete Annotated Reference to Hundreds of Historical Sites Visited by Abraham Lincoln | Paperback | 978-0-7867-1068-3 (0-7867-1068-3) | 2002 |
| The Presidents Were Here: A State-by-State Historical Guide | " | 978-0-7864-7715-9 (0-7864-7715-6) | 2013 |
| The Presidents Were Here: A State-by-State Historical Guide | Hardcover | 978-0-7864-3714-6 (0-7864-3714-6) | 2008 |
R. Gary · Ralph Garry · Ralph Gower · Ralph Gray · Ralph V. Gary · Rolf Geier · Rolf Groh