PHOTO PAPER THICKNESS NORMAL PHOTOGRAPH THICKNESS.
PHOTO CLASS 20 LOCO NO 20 140 AND 170 25TH FEB 1975
NCB - NO. 2 AREA - 0-6-0 LOCO. NO. 20 - EX NER - PHOTO #F909
PHOTO CLASS 20 NO 20308 & CLASS 37 NO 37612 AT ILFIELD STATION 9-99
NCB PHILADELPHIA COLLIERY - 0-6-0 TENDER LOCO. NO. 20 - PHOTO #F2938
WEST MIDLANDS GAS BOARD, SWAN VILLAGE - 0-4-0ST LOCO. "NO. 20" - PHOTO #F3476
WEST MIDLANDS GAS BOARD, SWAN VILLAGE - 0-4-0ST NO. 20 - PHOTO #F538
