Cite

ALS : Dresden, to Miss Charlotte Murphy

MLA

Speck, William A. (William Alfred), 1864-1928. ALS : Dresden, to Miss Charlotte Murphy. Box 11, folder 420. 1851 Feb 4. https://collections.library.yale.edu/catalog/17266941.

APA, 6th edition

Speck, William A. (William Alfred), 1864-1928. (["Box 11, folder 420"])(1851 Feb 4)[ALS : Dresden, to Miss Charlotte Murphy]. https://collections.library.yale.edu/catalog/17266941.