In 1904, Edward S. Curtis (1868-1952) began a massive project to document Native Americans. It took many years and resulted in the 20 volume set, The North American Indian. Each volume consists of a book of text with small photogravure prints and a portfolio of larger prints. Less than 300 sets were printed. These are highly collectible items with subtle, delicate detail (difficult to fully appreciate when viewed on a computer monitor!). Image size on the large gravures is around 11 x 15 inches, and the smaller ones are usually 5½ x 7½ inches.