Chicago And Northwestern Railroad Blueprints or Scale Drawings for Gas Electric Motor and Trailer Trucks. The builder is the St. Louis Car Company. Date built 1925. Car numbers 9900. Print measures approximately 38 1/2 inches long by 28 1/2 inches wide. There is chipping and pieces missing to the edges of the pages, some tears some larger than others, some pieces that are missing are larger than others. These are full page drawings with detailed drawings also. I some pages have been torn in half, some pages have been paper tape. Reparied pages show revisions that were probably done on site during the building. On the inside of the cover is it has been marked out Refrigerator Cars Made by the American Car And Foundry Company 1921. Blueprints are still very framable. blueprints have been rolled.