MLA

Lavater, Johann Caspar, 1741-1801. Two photographic reproductions of prints: Kaulbach's "Charlotte" and "Dora"; and one print of Pan. Box 3 (Oversize), folder 47. undated. https://collections.library.yale.edu/catalog/2057758.

APA, 6th edition

Lavater, Johann Caspar, 1741-1801. (["Box 3 (Oversize), folder 47"])(undated)[Two photographic reproductions of prints: Kaulbach's "Charlotte" and "Dora"; and one print of Pan]. https://collections.library.yale.edu/catalog/2057758.