The Izak Rosenblat papers were donated to the United States Holoicaust Memorial Museum in 1990 and 1995. The first donation made in 1990 was made by Izak Rosenblat, while the second in 1995 was made on the behalf of his estate by David McLung. These donations were given separate accession numbers upon their donation: 1990.139 and 1995.A.0310. These two accessions have since been merged together, and can be located under the accession number 1990.139.27.