561. Letter from Mark H. McCormack to Richard W. Hanselman Creator: McCormack, Mark H.; Hanselman, Richard W. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 23, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
562. Letter from Mark H. McCormack to Robert A. Raidt Creator: McCormack, Mark H.; Raidt, Robert A. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 13, 1969 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
563. Letter from Mark H. McCormack to Robert Allen Creator: McCormack, Mark H.; Allen, Robert E. (Robert Eugene), 1935- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 16, 1992 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
564. Letter from Mark H. McCormack to Robert Anderson Creator: McCormack, Mark H.; Anderson, Robert, 1920-2005 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 28, 1981 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
565. Letter from Mark H. McCormack to Robert B. Sheppard Creator: McCormack, Mark H.; Sheppard, Robert B. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 3, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
566. Letter from Mark H. McCormack to Robert B. Sheppard Creator: McCormack, Mark H.; Sheppard, Robert B. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: January 3, 1975 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
567. Letter from Mark H. McCormack to Robert B. Sheppard Creator: McCormack, Mark H.; Sheppard, Robert B. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 4, 1978 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
568. Letter from Mark H. McCormack to Robert E. McCowen Creator: McCormack, Mark H.; McCowen, Robert E. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: February 20, 1993 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
569. Letter from Mark H. McCormack to Robert E. (Robert Eugene) Allen Creator: McCormack, Mark H.; Allen, Robert E. (Robert Eugene), 1935- Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 25, 1993 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
570. Letter from Mark H. McCormack to Robert J. Buckley Creator: McCormack, Mark H.; Buckley, Robert J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 12, 1984 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
571. Letter from Mark H. McCormack to Robert J. Wussler Creator: McCormack, Mark H.; Wussler, Robert J., 1936-2010 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: August 18, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
572. Letter from Mark H. McCormack to Robert L. Rewey Creator: McCormack, Mark H.; Rewey, Robert L. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 3, 1992 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
573. Letter from Mark H. McCormack to Robert R. McMillan Creator: McCormack, Mark H.; McMillan, Robert R. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 18, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
574. Letter from Mark H. McCormack to Robert Richley Creator: McCormack, Mark H.; Richley, Robert Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 28, 1981 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
575. Letter from Mark H. McCormack to Robert W. Watson Creator: McCormack, Mark H.; Watson, Robert W. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 11, 1992 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
576. Letter from Mark H. McCormack to Roger A. Enrico Creator: McCormack, Mark H.; Enrico, Roger Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: May 13, 1993 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
577. Letter from Mark H. McCormack to Roland Puton Creator: McCormack, Mark H.; Puton, Roland Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 17, 1986 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
578. Letter from Mark H. McCormack to Ronnie C. Hampel Creator: McCormack, Mark H.; Hampel, Ronnie C. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 18, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
579. Letter from Mark H. McCormack to Ronnie C. Hampel Creator: McCormack, Mark H.; Hampel, Ronnie C. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 31, 1988 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
580. Letter from Mark H. McCormack to Ronnie C. Hampel Creator: McCormack, Mark H.; Hampel, Ronnie C. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 31, 1988 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives