I have a couple ebay listings for some old literature and may list more when I have a chance. There are only a few identical items out there but it looks to me like mine are in the best condition.

I currently have a 1966 Gretsch Drum Catalog - 271420883777 and a 1952 Ludwig booklet "My Life at the Drums" by Wm. F. Ludwig - 271422558718

Other items not yet listed include some issues of "The Ludwig Drummer" magazine and some other old drum company catalogs.