Series 91
Series 91 stands for:
- Tank locomotives with a 1'C wheel arrangement of the Deutsche Reichsbahn:
- Class 91.0-1: Prussian T 9 , BLE No. 36 to 43, PKP series Tki2
- Series 91.201 + 202: BLE No. 32 and 33
- Series 91.211 + 212: PE No. 4 and 5
- Series 91.221 + 222: WPE No. 109 and 110
- Series 91.231 + 232: MFWE No. 27 and 28
- Class 91.3-18: Prussian T 9.3
- Class 91.19: Mecklenburg T 4
- Class 91.20: Württemberg T 9
- Class 91.61 : various locomotives taken over by the DR in 1949
- Class 91.62 : various locomotives taken over by the DR in 1949
- Class 91.63 : various locomotives taken over by the DR in 1949
- Class 91.64 : various locomotives taken over by the DR in 1949
- Class 91.65 : various locomotives taken over by the DR in 1949
- Class 91.66 : locomotive 91 231 taken over by the DR in 1949
- Class 91.67 : various locomotives taken over by the DR in 1949
