QUOTE: Originally posted by cwclark I run a various era railroad but not to the time period extreme that your guy did...my earliest train is the SP sunset passenger, then I run trains that are from the 60's and 70's and then modern day stuff...the way i keep it all in check is to use old buildings on the layout like ones still standing in small towns usa at the present and as they did in the time period so that the trains can blend in just as well in the 60's as present day...another thing i do is keep the different time period locomotive consists together...i'll run F units and PA's together, rs's and gp-7's or 9's together...and the newer mac 70's or 90's together ...I go to great lengths to keep them separated...it looks really funny if i try to run ..say..an RS 11 with an AC4400...it never happened that way...I do have a lot of EMD cabs so they can run together with just about all my locomotives except the F-7's and the PA's because they were'nt around in that time period...chuck