I inherited a large number of blueprints primarily from the Chicago, Milwaukee, St. Paul & Pacific Railroad that date from about 1904 through 1960. Some are of mundane things like machinery, equipment locations, water wells, but there are several of buildings, track locations, turntables, switching equipment, cars, and nore. I don\'t know what to do with them. Should I sell them at auction like eBay? I do buy & sell antiques, but this one is a hard decision to make. I used to model trains (some 20 years ago) but have no real use for them now. Can anyone offer any ideas as to value? Or where they should go should I decide to donate them? Thanks,