Kelvin, William Thomson, 1st baron (1824-1907) - 2 autograph letters, signed, and 1 typed letter, signed, to Josiah Willard Gibbs. [London] and Ayrshire.
MLA
Gibbs, J. Willard (Josiah Willard), 1839-1903. Kelvin, William Thomson, 1st baron (1824-1907) - 2 autograph letters, signed, and 1 typed letter, signed, to Josiah Willard Gibbs. [London] and Ayrshire.. Box 2, folder 81. 1901 July 29, 1902 April 11 and October 14. https://collections.library.yale.edu/catalog/2020780.
APA, 6th edition
Gibbs, J. Willard (Josiah Willard), 1839-1903. (["Box 2, folder 81"])(1901 July 29, 1902 April 11 and October 14)[Kelvin, William Thomson, 1st baron (1824-1907) - 2 autograph letters, signed, and 1 typed letter, signed, to Josiah Willard Gibbs. [London] and Ayrshire.]. https://collections.library.yale.edu/catalog/2020780.
