That's weird, I have scans of NYSW 501 and 510 and they are 40 foot cars. Sorry, my typo. The IL is 40 ft 6in, not 50 ft 6 in. Do the scans you have match my description and/or the photo in Classic Freight Cars Vol 7?
Larry Kline Pittsburgh, PA
Yes Larry, they are clearly rebuilds of something. Also, as I was digging around looking for the BAR reefer photo, I found another NYSW photo - #504 in fairly new paint and it also has the 6/5/5 ends etc. So evidently based on your photos and mine, all of the cars were rebuilds. But of what?
Tim O'Connor <timboconnor@...> -->> NOTE EMAIL CHANGE <<-- Sterling, Massachusetts