| Year | 1989 |
| Date | 20-Jan |
| Volume | 162 |
| Issue | 3,841 |
| Page | 97 |
| Category | Locomotive Library |
| Part | |
| Title | Pennsylvania T1 Class |
| Author | R.M.E. |
| Notes | Describes a class of 4-4-4-4 steam locomotives built for express passenger service on an American railroad. Baldwins No.5533, No. 5511 |