MLA

Beck, James M. (James Montgomery), 1861-1936. Extra-illustrations in James M. Beck's The Constitution of the United States, 1763-1924. Box. https://collections.library.yale.edu/catalog/17303946.

APA, 6th edition

Beck, James M. (James Montgomery), 1861-1936. (["Box"])[Extra-illustrations in James M. Beck's The Constitution of the United States, 1763-1924]. https://collections.library.yale.edu/catalog/17303946.