There is no Budd Company archive per se, unlike with ACF and PS. Budd was comparitively poor with making sure their photographs, drawings, etc remained intact for historical purposes. However, there are a few sources where some of their material is held. Bombardier has many later model photographs and drawings. My understanding is that their collection is roughly from the mid-1950's onward. I also understand that the RR Museum of PA in Strasburg has some material, as does the Hagley Library in Wilmington, DE. Also, the University of Texas at Austin has many interior photographs of cars that had interiors designed by noted architect Paul Cret.