New York Central Track Charts- who has 'em?

I am looking for New York Central track charts. The Cleveland area in general and the Collinwood Yard layout in particular when the shops were still going strong. In an e-mail one time, Dave Cramer told me that the Central did a good job of destroying them.

I am hoping some ended up in friendly hands. Anyone know where to look?

Have you tried the NYC Historical Society? Their address is in Trainsmag.com under RR societies.