61. Letter from Mark H. McCormack to Gaetan Mourgue d'Algue Creator: McCormack, Mark H.; d'Algue, Gaetan Mourgue Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 19, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
62. Letter from Mark H. McCormack to Gaetan Mourgue d'Algue Creator: McCormack, Mark H.; d'Algue, Gaetan Mourgue Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 11, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
63. 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
64. Letter from Mark H. McCormack to George F. Carr Creator: McCormack, Mark H.; Carr, George Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 20, 1994 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
65. 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
66. 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
67. Letter from Mark H. McCormack to H. Harry Henderson Creator: McCormack, Mark H.; Henderon, H. Harry Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 17, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
68. 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
69. 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
70. 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: November 6, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
71. 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
72. 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: August 25, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
73. 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
74. 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: July 18, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
75. 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
76. Letter from Mark H. McCormack to J. K. Hunter Creator: McCormack, Mark H.; Hunter, J. K. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 31, 1976 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
77. 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: March 9, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
78. 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: September 1, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
79. 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
80. 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: May 18, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives