Signed 1953 American Card Catalog

The American Card Catalog is a foundational piece of the hobby. It was the first major attempt to categorize all known American card issues under a common numbering systems. So older American Card Catalogs are highly collectible, but this 1953 copy is special because both Jefferson Burdick and Charles Bray signed it. 

Here are some later reprints from the hobby library (1960, 1967, and 1988).