2010.030.PC23.01--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-looking toward class yard--East St Louis IL--1926 0315
2010.030.PC23.02--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-looking toward hump--East St Louis IL--1926 0315
2010.030.PC23.03--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-class yard from tower--East St Louis IL--1926 0315
2010.030.PC23.04--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-looking toward hump--East St Louis IL--1926 0315
2010.030.PC23.05--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-main lead retarder in action--East St Louis IL--1926 0315
2010.030.PC23.06--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-retarder closeup--East St Louis IL--1926 0315
2010.030.PC23.07--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-retarder mechanism--East St Louis IL--1926 0315
2010.030.PC23.08--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-retarder contactors--East St Louis IL--1926 0315
2010.030.PC23.09--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-model 6 switch machine--East St Louis IL--1926 0315
2010.030.PC23.10--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-model 6 switch machine--East St Louis IL--1926 0315
2010.030.PC23.11--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-skate machine skate closed--East St Louis IL--1926 0315
2010.030.PC23.12--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-skate machine skate open--East St Louis IL--1926 0315
2010.030.PC23.13--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-signalmans controller and telephone--East St Louis IL--1926 0315
2010.030.PC23.14--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-hump signal at humpEast St Louis IL--1926 0315
2010.030.PC23.15--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-motor-generator and switchboard--East St Louis IL--1926 0315
2010.030.PC23.16--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-operating machine--East St Louis IL--1926 0315
2010.030.PC23.17--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-operating machine--East St Louis IL--1926 0315
2010.030.PC23.18--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-operating machine lever mech--East St Louis IL--1926 0315
2010.030.PC23.19--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-general overview of hump--East St Louis IL--1926 0315
2010.030.PC23.20--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-general overview of hump--East St Louis IL--1926 0315
2010.030.PC23.21--lee hastman collection 8x10 print--ICRR--new GRS humpyard retarder system-looking toward hump--East St Louis IL--1926 0315