41. Letter from Mark H. McCormack to Gregory B. Peters Creator: McCormack, Mark H.; Peters, Gregory B. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 25, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
42. Letter from Mark H. McCormack to Hugh DeSamper Creator: McCormack, Mark H.; DeSamper, Hugh Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 5, 1963 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
43. Letter from Mark H. McCormack to I. M. Jack Creator: McCormack, Mark H.; Jack, I. M. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 11, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
44. Letter from Mark H. McCormack to J. Paul Thayer Creator: McCormack, Mark H.; Thayer, Paul, 1919-2010 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 28, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
45. Letter from Mark H. McCormack to James Murphy Creator: McCormack, Mark H.; Murphy, James Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 30, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
46. Letter from Mark H. McCormack to Jean Jacques de Peretti Creator: McCormack, Mark H.; de Peretti, Jean Jacques Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 5, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
47. Letter from Mark H. McCormack to Jean-Pierre Delanney Creator: McCormack, Mark H.; Delanney, Jean-Pierre Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 17, 1976 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
48. Letter from Mark H. McCormack to Jeff Harman Creator: McCormack, Mark H.; Harman, Jeff Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 3, 1977 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
49. Letter from Mark H. McCormack to John Arthur Brown Creator: McCormack, Mark H.; Brown, John Arthur Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 5, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
50. Letter from Mark H. McCormack to John Jacobs Creator: McCormack, Mark H.; Jacobs, John, 1925- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 5, 1988 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
51. Letter from Mark H. McCormack to John Newcombe Creator: McCormack, Mark H.; Newcombe, John, 1944- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 23, 1983 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
52. Letter from Mark H. McCormack to John Steinbreder Creator: McCormack, Mark H.; Steinbreder, John Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 2, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
53. Letter from Mark H. McCormack to Joseph G. Fogg Creator: McCormack, Mark H.; Fogg, Joseph G. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 5, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
54. Letter from Mark H. McCormack to Maurie Luxford Creator: McCormack, Mark H.; Luxford, Maurie Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 18, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
55. Letter from Mark H. McCormack to Mickey Powell Creator: McCormack, Mark H.; Powell, Mickey Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 10, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
56. Letter from Mark H. McCormack to multiple recipients Creator: McCormack, Mark H., Ohnishi, Hisamitsu, Pare, Paul, Townsend, Peter, 1946-, Bryce, Bill, Phillips, Colin, Bidwell, Ben, Alcantara, Freddy, and Low, Alistair J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 20, 1994 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
57. Letter from Mark H. McCormack to R. F. Newman Creator: McCormack, Mark H.; Newman, R. F. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 18, 1976 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
58. Letter from Mark H. McCormack to Radio Corporation of America Creator: McCormack, Mark H.; Radio Corporation of America Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 19, 1967 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
59. Letter from Mark H. McCormack to Rex Evans Creator: McCormack, Mark H.; Evans, Rex B. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 22, 1968 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
60. Letter from Mark H. McCormack to Robert B. McCurry, Jr. Creator: McCormack, Mark H.; McCurry, Robert B., 1923-2006 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 30, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives