61. Letter from Mark H. McCormack to Bertrand Mure Creator: McCormack, Mark H.; Mure, Bertrand Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 6, 1970 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
62. 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
63. Letter from Mark H. McCormack to Bill Meikeljohn Creator: McCormack, Mark H.; Meikeljohn, Bill Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 1, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
64. Letter from Mark H. McCormack to Bob Beattie Creator: McCormack, Mark H.; Beattie, Bob, 1933- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 17, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
65. Letter from Mark H. McCormack to Bob Beattie Creator: McCormack, Mark H.; Beattie, Bob, 1933- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 15, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
66. Letter from Mark H. McCormack to Byron Nelson Creator: McCormack, Mark H.; Nelson, Byron, 1912-2006 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 15, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
67. 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: August 6, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
68. Letter from Mark H. McCormack to Cees Wolzak Creator: McCormack, Mark H.; Wolzak, Cees Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 22, 1983 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
69. Letter from Mark H. McCormack to Christian Barnard Creator: McCormack, Mark H.; Barnard, Christiaan, 1922-2001 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 12, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
70. Letter from Mark H. McCormack to Christopher 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: September 10, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
71. Letter from Mark H. McCormack to Christopher 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: October 4, 1989 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
72. Letter from Mark H. McCormack to Christopher Skase Creator: McCormack, Mark H.; Skase, Christopher Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 9, 1988 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
73. Letter from Mark H. McCormack to Christopher Skase Creator: McCormack, Mark H.; Skase, Christopher Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 1, 1988 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
74. Letter from Mark H. McCormack to Clifford Perlman Creator: McCormack, Mark H.; Perlman, Clifford Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 10, 1980 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
75. Letter from Mark H. McCormack to David B. Fay Creator: McCormack, Mark H.; Fay, David B. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 4, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
76. Letter from Mark H. McCormack to David Loomis Creator: McCormack, Mark H.; Loomis, David Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 6, 1970 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
77. Letter from Mark H. McCormack to E. V. Clarke Creator: McCormack, Mark H.; Clarke, E. V. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 5, 1981 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
78. Letter from Mark H. McCormack to Frank C. Olson Creator: McCormack, Mark H.; Olson, Frank A., 1932- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 12, 1993 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
79. Letter from Mark H. McCormack to Frank D. Tatum Creator: McCormack, Mark H.; Tatum, Frank D. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 26, 1985 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
80. Letter from Mark H. McCormack to Frank D. Tatum Creator: McCormack, Mark H.; Tatum, Frank D. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 6, 1979 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives