361. Letter from Mark H. McCormack to Bryan Cowgill Creator: McCormack, Mark H.; Cowgill, Bryan, 1927-2008 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 14, 1982 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
362. Letter from Mark H. McCormack to Bryan Cowgill Creator: McCormack, Mark H.; Cowgill, Bryan, 1927-2008 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: November 17, 1980 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
363. Letter from Mark H. McCormack to Bryan Cowgill Creator: McCormack, Mark H.; Cowgill, Bryan, 1927-2008 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 10, 1979 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
364. Letter from Mark H. McCormack to Bryan Cowgill Creator: McCormack, Mark H.; Cowgill, Bryan, 1927-2008 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 21, 1981 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
365. Letter from Mark H. McCormack to C. J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 4, 1983 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
366. Letter from Mark H. McCormack to C. J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 25, 1994 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
367. Letter from Mark H. McCormack to C. J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 24, 1988 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
368. Letter from Mark H. McCormack to C. J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: October 12, 1987 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
369. Letter from Mark H. McCormack to C. J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: June 15, 1989 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
370. Letter from Mark H. McCormack to C. M. Ritchey Creator: McCormack, Mark H.; Ritchey, C. M. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 4, 1968 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
371. Letter from Mark H. McCormack to C. O. Iselin Creator: McCormack, Mark H.; Iselin, Columbus O'Donnell, 1931-2012 Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: July 5, 1978 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
372. Letter from Mark H. McCormack to Carl Lindemann Creator: McCormack, Mark H.; Lindemann, Carl, 1923-1985 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
373. Letter from Mark H. McCormack to Charles F. Adams Creator: McCormack, Mark H.; Adams, Charles F. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 11, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
374. Letter from Mark H. McCormack to Charles Kettaneh Creator: McCormack, Mark H.; Kettaneh, Charles Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 20, 1972 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
375. Letter from Mark H. McCormack to Charles R. Stuart Creator: McCormack, Mark H.; Stuart, Charles R. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 23, 1976 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
376. Letter from Mark H. McCormack to Chris McDonald Creator: McCormack, Mark H.; McDonald, Chris Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 6, 1973 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
377. Letter from Mark H. McCormack to Christopher J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: September 19, 1991 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
378. Letter from Mark H. McCormack to Christopher J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: March 5, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
379. Letter from Mark H. McCormack to Christopher J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: December 8, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives
380. Letter from Mark H. McCormack to Christopher J. Gorringe Creator: McCormack, Mark H.; Gorringe, C. J. Format: Letters/Correspondence; Manuscripts Collection: Mark H. McCormack Papers, ca. 1920-2008 (bulk: 1957-2003) Date: April 27, 1990 Institution: University of Massachusetts Amherst Libraries Special Collections and University Archives