Letter from Mark H. McCormack to Norman Blake

Chicago citation style
McCormack, Mark H, Blake, Norman, Pan American World Airways, Inc. Letter from Mark H. McCormack to Norman Blake. 1970-06-22. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0002-f015-i124. (Accessed December 13, 2019.)
APA citation style
McCormack, Mark H, Blake, Norman, Pan American World Airways, Inc, (1970-06-22) Letter from Mark H. McCormack to Norman Blake. Retrieved from the Digital Public Library of America, http://credo.library.umass.edu/view/full/mums700-b0002-f015-i124
MLA citation style
McCormack, Mark H, Blake, Norman, Pan American World Airways, Inc. Retrieved from the Digital Public Library of America <http://credo.library.umass.edu/view/full/mums700-b0002-f015-i124>.
Note: These citations are programmatically generated and may be incomplete.