G.S. · George M. Smerk · George S.
| title | ISBN-13 (ISBN-10) | year of publica- tion | other author(s) |
|---|---|---|---|
| Encyclopedia of North American Railroads | 978-0-253-34916-3 (0-253-34916-8) | 2007 | William D. Middleton · Roberta L. Diehl |
| The Federal Role in Urban Mass Transportation | 978-0-253-35283-5 (0-253-35283-5) | 1991 | |