A collection of 33 original photographs from the Japanese internment camp at Heart Mountain, Wyoming. The black and white images depict the people of the camp, their living quarters, and daily life.

Most of the black and white photographs of varying sizes are lightly mounted with double-stick tape on 28 x 22 inch white board with pencil captions below. The printing date of the photographs is not noted. Among the scenes is a three-panel panoramic of the Heart Mountain camp, a group of skilled workers in front of the carpenters shop, and views of internees bidding farewell to visitors through a barbed wire fence. A photo captioned "mess hall workers" is missing from one board and another of "St. Francis" is loose.

Also included in the papers is a program from Iwanaga's 2002 UCLA exhibit which contains a bit of biographical information; two letters sent from materials vendors to Iwanaga at Heart Mountain when he worked in the Public Works Department; a report on color photography he completed in 1945 for and English class at the University of Minnesota; and a 1947 thesis he co-wrote in pursuit of his master's degree at the University of Washington.