Cite

Congo negatives

MLA

Phillips, Ulrich Bonnell, 1877-1934. Congo negatives. Box 3, folder 4. 1929 January. https://collections.library.yale.edu/catalog/10019924.

APA, 6th edition

Phillips, Ulrich Bonnell, 1877-1934. (["Box 3, folder 4"])(1929 January)[Congo negatives]. https://collections.library.yale.edu/catalog/10019924.