File Zeiss Collection, 1946-1960 Folder Series 4: Rare Books and Special Collections Department, 1768-2017 » …
File Zarker, Harold E, 1941-1955 Folder Series 1: Dean of the School of Engineering and Applied Science, 1896-2016 September 13 » …
File Zabriskie Jr., K. H., Unit Operations Problems, 1949 Folder Series 1: Dean of the School of Engineering and Applied Science, 1896-2016 September 13 » …
File York, Doctor W. H, 1937-1957 Folder Series 1: Dean of the School of Engineering and Applied Science, 1896-2016 September 13 » …
File Young Men's & Young Women's Hebrew Association, 1946-1949 Folder Series 2: Correspondence, 1911-1979 » …
File Young Women's Christian Association, 1943-1949 Folder Series XIII, General Correspondence, 1941-1963 (mostly 1941-1950)
File "Yugoslavia between East and West", 1949 November 9 Folder Subseries 4B: Records of Meetings, 1920-1995
File Unsuccessful Invitations to Important Speakers, 1931-1962 Folder Subseries 4A: Administration, 1924-1993 » …
File "Trieste in Our European Strategy", 1949 March 2 Folder Subseries 4B: Records of Meetings, 1920-1995
File Women's International League for Peace and Freedom, 1936-1950 Folder Series 3: Correspondence, 1917-1950 » …
File Young People's Socialist League, 1932-1963 Folder Series 9. Clubs and Organizations, 1837-2016 » …
File Young Men's Christian Association/Young Women's Christian Association (YMCA/YWCA), 1917-1929, 1943-1951 Folder Series 1: Correspondence, 1898-1971
