I'll take a break from being list curmudgeon to share a link for fans of Penn Central and other Eastern roads. This site has a number of scanned maps, timetables, track charts, and promotional materials. It does also have a limited number of resources for Canadian, Western, and Midwest railroads. I'm sure Brakie and Ralph will like it if they haven't already seen it.

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Thanks Brian! I haven't seen this link before. Much appreciated.
Ralph