121. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 16, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
122. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 9, 1968 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
123. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 8, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
124. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 17, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
125. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 7, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
126. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 6, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
127. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 8, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
128. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 2, 1976 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
129. Letter from Mark H. McCormack to Aaron Rubin Creator: McCormack, Mark H.; Rubin, Aaron Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 1, 1977 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
130. Letter from Mark H. McCormack to Al Rush Creator: McCormack, Mark H.; Rush, Al Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 2, 1977 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
131. Letter from Mark H. McCormack to Allen E. Humphrey Creator: McCormack, Mark H.; Humphrey, Allen E. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 9, 1970 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
132. 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
133. 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 29, 1985 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
134. 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: June 12, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
135. 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: June 5, 1978 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
136. 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: September 29, 1988 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
137. Letter from Mark H. McCormack to Anotny H. Carter Creator: McCormack, Mark H.; Carter, Anthony H. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 1, 1968 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
138. Letter from Mark H. McCormack to Anthony H. Carter Creator: McCormack, Mark H.; Carter, Anthony H. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 6, 1968 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
139. Letter from Mark H. McCormack to Anthony H. Carter Creator: McCormack, Mark H.; Carter, Anthony H. 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
140. Letter from Mark H. McCormack to Antȏnio Carlos de Almeida Braga Creator: McCormack, Mark H.; Braga, Antȏnio Carlos de Almeida Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 27, 1978 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives