MLA

Beinecke, Edwin J. (Edwin John), 1886-1970. Disbound album of photographs, artwork by Isobel Field, and clippings relating to Stevenson's life in Samoa (In Series III). Box 123, folder 2078-2080. undated. https://collections.library.yale.edu/catalog/2011552.

APA, 6th edition

Beinecke, Edwin J. (Edwin John), 1886-1970. (["Box 123, folder 2078-2080"])(undated)[Disbound album of photographs, artwork by Isobel Field, and clippings relating to Stevenson's life in Samoa (In Series III)]. https://collections.library.yale.edu/catalog/2011552.