21. 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: February 8, 1985 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
22. 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: February 18, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
23. 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: November 19, 1985 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
24. Letter from Mark H. McCormack to Bennett E. Bidwell Creator: McCormack, Mark H.; Bidwell, Ben Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 23, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
25. Letter from Mark H. McCormack to Bennett E. Bidwell Creator: McCormack, Mark H.; Bidwell, Ben Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 18, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
26. Letter from Mark H. McCormack to Bill Bryce Creator: McCormack, Mark H.; Bryce, Bill Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 18, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
27. Letter from Mark H. McCormack to Bruce Rappaport Creator: McCormack, Mark H.; Rappaport, Bruce Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 14, 1978 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
28. Letter from Mark H. McCormack to Bruce Rappaport Creator: McCormack, Mark H.; Rappaport, Bruce Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 14, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
29. Letter from Mark H. McCormack to Bruce Rappaport Creator: McCormack, Mark H.; Rappaport, Bruce Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 22, 1972 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
30. Letter from Mark H. McCormack to Bruce Rappaport Creator: McCormack, Mark H.; Rappaport, Bruce Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 28, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
31. Letter from Mark H. McCormack to Bruce Rappaport Creator: McCormack, Mark H.; Rappaport, Bruce Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 3, 1980 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
32. Letter from Mark H. McCormack to Bruce Rappaport Creator: McCormack, Mark H.; Rappaport, Bruce Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 3, 1980 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
33. Letter from Mark H. McCormack to Charles S. Mechem Jr. Creator: McCormack, Mark H.; ., 1930- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 10, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
34. Letter from Mark H. McCormack to Chester R. Simmons Creator: McCormack, Mark H.; Simmons, Chester R. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 5, 1978 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
35. Letter from Mark H. McCormack to Chester R. Simmons Creator: McCormack, Mark H.; Simmons, Chester R. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 5, 1978 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: November 16, 1985 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
37. Letter from Mark H. McCormack to Claude Roger Cartier Creator: McCormack, Mark H.; Cartier, Claude-Roger Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 26, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
38. Letter from Mark H. McCormack to Claude-Roger Cartier Creator: McCormack, Mark H.; Cartier, Claude-Roger Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 26, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
39. Letter from Mark H. McCormack to Claude-Roger Cartier Creator: McCormack, Mark H.; Cartier, Claude-Roger Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 28, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
40. Letter from Mark H. McCormack to Colin A. Phillips Creator: McCormack, Mark H.; Phillips, Colin Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 26, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives