Description: Cardboard box made similar to an envelope that contained seventeen postcards that were apparently purchased as a set. The front of the box has brown text that reads: "Boulder Dam [top, center] Word's Most Impressive Engineering Spectacle Center of a Magnificent Scenic Wonderland 18 Miniature Post Cards from Original Photographs". On left side of box front is a drawing of the dam, and on the right side is a drawing of canyons. The back of the box has text in brown that reads: "From [line] To [lines]" and in a rectangular box top, right "Postage 1 1/2[cents] Seal With Stamp". Text written under flap: "Issued By Boulder Dam Service Bureau Boulder Theatre Building Boulder City, Nevada Official Motion Pictures, Original Photographs, Souvenirs and Authentic Booklets".