Cite

2181. Calcium light night from Conn.

MLA

Freeman, Walter, 1895-1972. 2181. Calcium light night from Conn.. Box 5, folder 169. 1912. https://collections.library.yale.edu/catalog/10011040.

APA, 6th edition

Freeman, Walter, 1895-1972. (["Box 5, folder 169"])(1912)[2181. Calcium light night from Conn.]. https://collections.library.yale.edu/catalog/10011040.