This collection consists of 5 roof tiles, photocopies of correspondence and correspondence between the University of Idaho and Hiroshima University, and several books in Japanese. The photocopies are of correspondence dating 1951, while the rest is from 2010-2011. The roof tiles are undated, but were blown from roofs in Hiroshima in 1945. Also included with the collection are the cloth and rope used to wrap the materials by Hiroshima University when sending it to the University of Idaho.

One of the roof tiles is on display at the University of Idaho Martin Institute.