After receiving some much-appreciated help from Will Davis in identifying diesel locomotives photographed by my Dad and Grandfather in the 1960s and 1970s (http://www.railroad.net/forums/viewtopi ... 6&t=156532), I'm going to post the remaining four photographs with unidentified locomotives to see if anyone can identify them. These are all quite challenging, and I certainly don't expect any of them to be identified, but if someone can identify (any of) them I'd greatly appreciate it. Here they are, with all the infomation I know about them:
An Ann Arbor Railroad freight as seen from the Federal-Mogul Building on Research Park Drive in Ann Arbor, Michigan, circa mid-1960s. They look like Geeps to me, and based on the Ann Arbor's roster at the time (http://www.thedieselshop.us/AA.HTML) it appears that (if they are indeed EMDs) they must by GP35s:
(https://commons.wikimedia.org/wiki/File ... 5_3-29.jpg)
A Union Pacific train departing from Union Station in Chicago, Illinois in October 1967 (Will already had a look at this one and thinks it is either an E8A or an E9A):
(https://commons.wikimedia.org/wiki/File ... 7_3-30.jpg)
The Northern Pacific's North Coast Limited in Montana in June 1969:
(https://commons.wikimedia.org/wiki/File ... 9_3-33.jpg)
A Chessie System freight passing nearby the Chessie Steam Special at Plymouth, Michigan in July 1977:
(https://commons.wikimedia.org/wiki/File ... _10-25.jpg)
An Ann Arbor Railroad freight as seen from the Federal-Mogul Building on Research Park Drive in Ann Arbor, Michigan, circa mid-1960s. They look like Geeps to me, and based on the Ann Arbor's roster at the time (http://www.thedieselshop.us/AA.HTML) it appears that (if they are indeed EMDs) they must by GP35s:
(https://commons.wikimedia.org/wiki/File ... 5_3-29.jpg)
A Union Pacific train departing from Union Station in Chicago, Illinois in October 1967 (Will already had a look at this one and thinks it is either an E8A or an E9A):
(https://commons.wikimedia.org/wiki/File ... 7_3-30.jpg)
The Northern Pacific's North Coast Limited in Montana in June 1969:
(https://commons.wikimedia.org/wiki/File ... 9_3-33.jpg)
A Chessie System freight passing nearby the Chessie Steam Special at Plymouth, Michigan in July 1977:
(https://commons.wikimedia.org/wiki/File ... _10-25.jpg)