Unique historical documents, manuscripts and autographed items are available at the Gallery of History for the serious collector. With more than 184,000 items collected by the owner through the years, the place claims to be the largest dealer in the world. Just a sample of its inventory includes Hollywood movie legends, posters, sports history, famous political manifestos and original documents that shaped the history of the world. One is sure to find collector's items on the store's auction site, too.