1. Letter from Mark H. McCormack to Andre J. Heiniger Creator: McCormack, Mark H.; Heiniger, Andre J., 1921-2000 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 1, 1984 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
2. Letter from Mark H. McCormack to Chalermchai Charuvastr Creator: McCormack, Mark H.; Charuvastr, Chalermchai Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 27, 1977 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
3. Letter from Mark H. McCormack to Charley Pride Creator: McCormack, Mark H.; Pride, Charley Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 28, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
4. Letter from Mark H. McCormack to Chird Boonyaratavei Creator: McCormack, Mark H.; Boonyaratavei, Chird Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 27, 1977 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
5. Letter from Mark H. McCormack to Cliff Minshull Creator: McCormack, Mark H.; Minshull, Cliff Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 30, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
6. Letter from Mark H. McCormack to D. E. Benaud Creator: McCormack, Mark H.; Benaud, D. E. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 30, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
7. Letter from Mark H. McCormack to David M. Culver Creator: McCormack, Mark H.; Culver, David M., 1924- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 14, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
8. Letter from Mark H. McCormack to Dominick Zangari Creator: McCormack, Mark H.; Zangari, Dominick Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 25, 1978 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
9. Letter from Mark H. McCormack to E. Gregory Hookstratten Creator: McCormack, Mark H.; Hookstratten, E. Gregory Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 27, 1976 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
10. Letter from Mark H. McCormack to Edward B. Osborne Creator: McCormack, Mark H.; Osborne, Edward B. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 13, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
11. Letter from Mark H. McCormack to Frank Hannigan Creator: McCormack, Mark H.; Hannigan, Frank Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 8, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
12. Letter from Mark H. McCormack to George Blumberg Creator: McCormack, Mark H.; Blumberg, George Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 30, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
13. Letter from Mark H. McCormack to Grant G. Simmons Creator: McCormack, Mark H.; Simmons, Grant G., 1920-2008 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 5, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
14. Letter from Mark H. McCormack to Grant G. Simmons Creator: McCormack, Mark H.; Simmons, Grant G., 1920-2008 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 15, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
15. Letter from Mark H. McCormack to Harry Janicki Creator: McCormack, Mark H.; Janicki, Harry Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 5, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
16. Letter from Mark H. McCormack to Ian Chapman Creator: McCormack, Mark H.; Chapman, Ian Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 30, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
17. Letter from Mark H. McCormack to Ian Chapman Creator: McCormack, Mark H.; Chapman, Ian Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 21, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
18. Letter from Mark H. McCormack to Ian Wells Creator: McCormack, Mark H.; Wells, Ian Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 28, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
19. Letter from Mark H. McCormack to Ion Mangos Creator: McCormack, Mark H.; Mangos, Ion Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 10, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
20. Letter from Mark H. McCormack to Jack Urlwin Creator: McCormack, Mark H.; Urlwin, Jack Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 14, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives