Collection of 50 (49 different), unused, post cards from the International Exhibition of Modern Art, held at the 69th Regiment Armory in New York City, February 18 to March 13, 1913 by the Association of American Painters and Sculptors. Each with a photograph of one of the exhibited art works. Also, 4 post cards from the May 1913 exhibit in Boston, and 1 card from a 1913 exhibit at the Art Institute of Chicago. Together 55 cards, housed in a custom chemise and slipcase.

The 1913 International Exhibition of Modern Art that was organized by the Association of American Painters and Sculptors (The Armory Show) was the first large exhibition of modern art in America. The three-city exhibition started in New York City's 69th Regiment Armory, from February 17 until March 15, 1913. The exhibition went on to show at the Art Institute of Chicago and then to The Copley Society of Art in Boston, where, due to a lack of space, all the work by American artists was removed. The show was a very significant event in the history of American art, introducing astonished Americans, who were accustomed to realistic art, to the experimental styles of the European vanguard, including Fauvism, Cubism, and Futurism. The post cards include works by Duchamp, Matisse, Cezanne, Van Gogh, Brancusi, Hassam, Gauguin, Bellows, Picasso, Manolo, Archipenko, and many others. Individual cards from this series are difficult to obtain, a collection of this size is unlikely to be encountered again.