Backmeister, Walter, from Wolf-Ferrari, Wilhelmine
MLA
Koch, Frederick R. (Frederick Robinson). Backmeister, Walter, from Wolf-Ferrari, Wilhelmine. Box 61, folder 1394. 1948-64, n.d.. https://collections.library.yale.edu/catalog/2042296.
APA, 6th edition
Koch, Frederick R. (Frederick Robinson). (["Box 61, folder 1394"])(1948-64, n.d.)[Backmeister, Walter, from Wolf-Ferrari, Wilhelmine]. https://collections.library.yale.edu/catalog/2042296.