21. Letter from Harold Anderson to Mark H. McCormack Creator: Anderson, Harold; McCormack, Mark H. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 12, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
22. Letter from Ian M. Scott to Mark H. McCormack Creator: Scott, Ian M.; McCormack, Mark H. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 5, 1984 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
23. Letter from K. R. T. MacKenzie to World Management Establishment Creator: MacKenzie, Keith; World Management Establishment Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 29, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
24. Letter from Mark H. McCormack to Adrian Metcalfe Creator: McCormack, Mark H.; Metcalfe, Adrian Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 30, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
25. Letter from Mark H. McCormack to Alistair J. Low Creator: McCormack, Mark H.; Low, Alistair J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 12, 1987 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
26. Letter from Mark H. McCormack to Andre 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 22, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
27. 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: July 22, 1972 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
28. 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: July 15, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
29. 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 20, 1987 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
30. Letter from Mark H. McCormack to Ben Bidwell Creator: McCormack, Mark H.; Bidwell, Ben Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 7, 1972 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
31. Letter from Mark H. McCormack to Bill Hall Creator: McCormack, Mark H.; Hall, Bill Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 28, 1970 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
32. Letter from Mark H. McCormack to Bob Witcher Creator: McCormack, Mark H.; Witcher, Bob Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 19, 1970 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
33. Letter from Mark H. McCormack to C. J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 16, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
34. Letter from Mark H. McCormack to Changsup Hahn Creator: McCormack, Mark H.; Hahn, Changsup Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 3, 1985 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
35. Letter from Mark H. McCormack to Charles F. Adams Creator: McCormack, Mark H.; Adams, Charles F. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 18, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
36. Letter from Mark H. McCormack to Christopher Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 24, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
37. Letter from Mark H. McCormack to Christopher Lewinton Creator: McCormack, Mark H.; Lewinton, Chris Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 10, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
38. Letter from Mark H. McCormack to Christopher Lewinton Creator: McCormack, Mark H.; Lewinton, Chris Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 20, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
39. Letter from Mark H. McCormack to Christopher Lewinton Creator: McCormack, Mark H.; Lewinton, Chris Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 10, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
40. Letter from Mark H. McCormack to David Foster Creator: McCormack, Mark H.; Foster, David R. (David Ramsey), 1920-2010 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 7, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives