MLA

D'Aulaire, Edgar Parin, 1898-1986. Color and black and white proofs; duplicates titled "Lapp Children"; proof titled in Edgar's hand; proof for second edition dust jacket. Box 51 (Oversize). circa 1963. https://collections.library.yale.edu/catalog/17450169.

APA, 6th edition

D'Aulaire, Edgar Parin, 1898-1986. (["Box 51 (Oversize)"])(circa 1963)[Color and black and white proofs; duplicates titled "Lapp Children"; proof titled in Edgar's hand; proof for second edition dust jacket]. https://collections.library.yale.edu/catalog/17450169.