MLA

Huntington, Ellsworth, 1876-1947. Stereoscopic cards of scenes from Europe, Asia, and Australia [each card contains detailed description of image, Underwood & Underwood, Publishers. Box 11. Early 1900s. https://collections.library.yale.edu/catalog/10015591.

APA, 6th edition

Huntington, Ellsworth, 1876-1947. (["Box 11"])(Early 1900s)[Stereoscopic cards of scenes from Europe, Asia, and Australia [each card contains detailed description of image, Underwood & Underwood, Publishers]. https://collections.library.yale.edu/catalog/10015591.