I am looking for any blueprints/drawings or sources for Pullman PA class coach drawings - series 500 - 685. These were used by the Delaware Lackawanna and Western RR and other railroads. Built around 1914-1915. I need detailed drawings, not just the builders cards.

Thanks.

Pullman Library at the Illinois Railway Museum?

http://www.irm.org/pullmanlibrary/index.html

-Hudson