Cite

LS : to Wilhelm Reichel

MLA

Speck, William A. (William Alfred), 1864-1928. LS : to Wilhelm Reichel. Box 9, folder 294a. 1828 Feb 15. https://collections.library.yale.edu/catalog/2014576.

APA, 6th edition

Speck, William A. (William Alfred), 1864-1928. (["Box 9, folder 294a"])(1828 Feb 15)[LS : to Wilhelm Reichel]. https://collections.library.yale.edu/catalog/2014576.