This is a great vintage Edward Curtis photogravure from a personal collector who lived in the Massachusetts area. It is plate number 388. It was found at an estate sale in the Massachusetts area and was most likely purchased from Lauriat Books of Boston. The individual had a personal debossing stamp that was used to imprint on the bottom. The stamp does not interfere with the plate area It measures 18x22.5 inches. Photogravure by Curtis, finely printed from the original plate, on wove paper watermarked "Tweedweave"  . While I am not an expert on this subject I would be happy to answer any other questions you might have.          Great Piece 

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