Consists of documentation of Boris Rubinstein's work with the UNRRA mission in the former Yugoslavia, such as reports and publications, as well as personal correspondence, photographs, and documentation of Mr. Rubinstein's time in the Canadian Army.

The file contains information pertaining to travel to Eastern Europe for research related to "The Gossamer Thread." The file is divided into chunks of countries labelled on folds of paper, between which are pamphlets, correspondence, and research on the respective country, mostly related to synagogues and museums.