Cite

ALS : Weimar, to Franz Kirms

MLA

Speck, William A. (William Alfred), 1864-1928. ALS : Weimar, to Franz Kirms. Box 9, folder 284. 1812 Mar 7. https://collections.library.yale.edu/catalog/2005314.

APA, 6th edition

Speck, William A. (William Alfred), 1864-1928. (["Box 9, folder 284"])(1812 Mar 7)[ALS : Weimar, to Franz Kirms]. https://collections.library.yale.edu/catalog/2005314.