MLA

A Connecticut Pharmacy, Mid-19th Century/ Yale Medical Library/ Gift of Edward Clark Streeter. Associates of Yale Medical Library, 1960. https://collections.library.yale.edu/catalog/15789462.

APA, 6th edition

A Connecticut Pharmacy, mid-19th century/ Yale Medical Library/ Gift of Edward Clark Streeter. (1960). [Postcards (AAT)]. Associates of Yale Medical Library. https://collections.library.yale.edu/catalog/15789462.