Cite

LS : Weimar, to Adolf Oswald Blumenthal

MLA

Speck, William A. (William Alfred), 1864-1928. LS : Weimar, to Adolf Oswald Blumenthal. Box 9, folder 270. 1819 May 28. https://collections.library.yale.edu/catalog/2005300.

APA, 6th edition

Speck, William A. (William Alfred), 1864-1928. (["Box 9, folder 270"])(1819 May 28)[LS : Weimar, to Adolf Oswald Blumenthal]. https://collections.library.yale.edu/catalog/2005300.