21. Letter from Mark H. McCormack to Arthur Huxley Creator: McCormack, Mark H.; Huxley, Arthur Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 18, 1970 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
22. Letter from Mark H. McCormack to Arthur Huxley Creator: McCormack, Mark H.; Huxley, Arthur Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 26, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
23. Letter from Mark H. McCormack to Arthur Huxley Creator: McCormack, Mark H.; Huxley, Arthur 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
24. Letter from Mark H. McCormack to Ben Bidwell Creator: McCormack, Mark H.; Bidwell, Ben 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
25. Letter from Mark H. McCormack to Ben Hardesty Creator: McCormack, Mark H.; Hardesy, Ben Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 6, 1971 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
26. Letter from Mark H. McCormack to Bob Ferrier Creator: McCormack, Mark H.; Ferrier, Bob Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 5, 1968 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
27. Letter from Mark H. McCormack to Bob Ferrier Creator: McCormack, Mark H.; Ferrier, Bob Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 27, 1968 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
28. Letter from Mark H. McCormack to Bob Hope Creator: McCormack, Mark H.; Hope, Bob, 1903-2003 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 4, 1966 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
29. Letter from Mark H. McCormack to Charles L. Foley Creator: McCormack, Mark H.; Foley, Charles L. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 5, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
30. Letter from Mark H. McCormack to Clarence D. Price Creator: McCormack, Mark H.; Price, Clarence D. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 18, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
31. Letter from Mark H. McCormack to Cliff Minshull Creator: McCormack, Mark H.; Minshull, Cliff 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
32. Letter from Mark H. McCormack to Cliffe, Dekker and Todd Creator: McCormack, Mark H.; Cliffe, Decker and Todd Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 17, 1967 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
33. Letter from Mark H. McCormack to Conkey Swimming Pool Supply Company Creator: McCormack, Mark H.; Conkey Swimming Pool Supply Company Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 17, 1961 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
34. Letter from Mark H. McCormack to Curtis Person Creator: McCormack, Mark H.; Person, Curtis Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 9, 1963 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
35. Letter from Mark H. McCormack to D. Byford and Company, Limited Creator: McCormack, Mark H.; D. Byford and Company, Limited Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 18, 1967 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
36. Letter from Mark H. McCormack to David Foster Creator: McCormack, Mark H.; Foster, David R. (David Ramsey), 1920-2010 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 7, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
37. Letter from Mark H. McCormack to David Foster Creator: McCormack, Mark H.; Foster, David R. (David Ramsey), 1920-2010 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 28, 1974 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
38. Letter from Mark H. McCormack to David Foster Creator: McCormack, Mark H.; Foster, David R. (David Ramsey) Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 18, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
39. Letter from Mark H. McCormack to David Foster Creator: McCormack, Mark H.; Foster, David R. (David Ramsey), 1920-2010 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 13, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
40. Letter from Mark H. McCormack to David Foster Creator: McCormack, Mark H.; Foster, David R. (David Ramsey), 1920-2010 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 8, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives