- CA MHC PP-Volume 5343
Part of J.J. Siemens family collection
Correspondence among the J.J. Siemens family, predominantly from children Viola and John to John J. and Marie Siemens, and research notes taken by Rodney Sawatzky for a biography on Siemens.. -- 1940-1957.
Sawatsky, Rodney, 1943-2004