Letter from Mark H. McCormack to Ned H. McCormack

Chicago citation style
McCormack, Mark H, McCormack, Ned H., 1899-1995. Letter from Mark H. McCormack to Ned H. McCormack. 1961-12-18. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0001-f012-i083. (Accessed December 9, 2019.)
APA citation style
McCormack, Mark H, McCormack, Ned H., 1899-1995, (1961-12-18) Letter from Mark H. McCormack to Ned H. McCormack. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0001-f012-i083
MLA citation style
McCormack, Mark H, McCormack, Ned H., 1899-1995. Retrieved from the Digital Public Library of America <http://credo.library.umass.edu/view/full/mums700-b0001-f012-i083>.
Note: These citations are programmatically generated and may be incomplete.