• Adams (Perry) Papers, ca. l967-1980. (Mss 1)
• Nineteenth Century Americana Collection, ca. 1754-1926. (Mss 2)
• Ballitore Collection, ca. 1605-1917 [bulk dates 1770-1859]. (Mss 4)
• Beckett (Samuel) Papers, ca. 1959-1973. (Mss 5)
• Bligh (Eric Walter) Collection, ca. 1886-1965. (Mss 8)
• Bukowski (Charles) Papers,  ca. 1955-1980. (Mss 12)
• Burns (Vincent Godfrey) Papers, ca. 1930s-1969. (Mss 13)
• Concrete Poetry Collection, 1960-1973. (Mss 16)
• Cook (Margaret Frances Case) Papers, ca. 1901-1960. (Mss 17)
• Center for the Study of Democratic Institutions Collection, 1950-1991. (Mss 18)
• Davidson (Donald C.) Papers, ca. 1920s-1980s. (Mss 19)
• de Mille (Richard) Collection, 1959-1979. (Mss 20)
• Ernst (Morris L.) Banned Book Collection, ca. 1956-1990. (Mss 27)
• Darwin (Charles) / Evolution Collection,  ca. 1786-1968. (Mss 28)
• Foot (Isaac) Collection, ca. 1530-1964. (Mss 33)
• French Revolutionary Pamphlets Collection, ca. 1782-1831. (Mss 36)
• Haight-Ashbury Collection, ca. 1967. (Mss 42)
• N. N. Hill Brass Company Records, 1891-1904. (Mss 47)
• Holzwarth (Adam) Anarchist Collection, ca. 1909-1929. (Mss 48) 
• Jeffers (Robinson) / Frank H. Armstrong Collection, 1926-1980. (Mss 53)
• Merrill (Charles A.) Papers, ca. 1840s-1890s. (Mss 59)
• Lambert (Eric) Papers, ca. 1960s. (Mss 62)
• Landau (Rom) Collection, 1899-1965. (Mss 63)
• Indians of California Photograph Collection, ca. 1900s. (Mss 71)
• Miller (Arthur) / After the Fall Collection, ca. 1963-1964. (Mss 80)
• Mitchell (Ruth Comfort) Collection, ca. 1879-1961. (Mss 84)
• Nabokov (Vladimir) Collection, 1966-1987. (Mss 86)
• 1984 Olympic Games Collection. (Mss 90)
• East Asian Artifacts Collection, 1845, 1853, 1960s. (Mss 91)          
• Peattie (Donald Culross and Louise Redfield) Collection, 1912-1984. (Mss 94)
• Pound (Ezra) / John Richmond Theobald Correspondence, 1957-1958. (Mss 99)
• Auction Catalogs, 1938-1990. (Mss 104)
• Romaine (Lawrence B.) Trade Catalog Collection,  ca. 1850-1968. (Mss 107)
• Sinclair (Upton) Collection, 1930-1934. (Mss 113) 
• Pound (Ezra)/Elisabeth Wintersteen Schneider Correspondence, ca. 1952-1958. (Mss 114)
• Sokolov (Sasha) Collection, 1975-1991. (Mss 117)
• Stereoscopic Views Collection, ca. 1877-1913. (Mss 121)
• Stopes (Marie Carmichael) Birth Control Collection, ca. 1871-1967 (Mss 122)
• Eisenhower (Dwight D.) Ephemera Collection, ca. 1950s. (Mss 127)
• Ward-Perkins Family Papers, ca. 1788-1954. (Mss 129)
• Watkins (Richard Howells) Collection, ca. 1895-1950s. (Mss 130)
• Toole-Stott (Raymond) / W. Somerset Maugham Collection, 1904-1974. (Mss 143)
• Dole (William E.) Collection, 1708-1730. (Mss 146)
• Ashmore (Harry S.) Collection, ca. 1922-1997. (Mss 155)
• Sweet (Robert B.) Collection, ca. 1807-1959. (Mss 156)
• Hammer (Milton) Collection, ca. 1880-1964. (Mss 161)
• Huglin (Henry C.) Papers, 1965-1995. (Mss 164)
• Alternative Press Collection, ca. 1966-1977. (Mss 169)
• Williams (James C.) Trade Catalog Collection, ca. 1911-1930s. (Mss 170)
• English Photo Album, ca. 1920s-1930s. (Mss 174)
• Medieval Manuscript Fragments Collection, 10th century – ca. 18th century [bulk 12th century – 14th century]. (Mss 175)
• Historia Lexegnina del Duende Politico de los anos 1735, 1736, 1737. (Mss 179)
• Great Britain. Parliament. House of Lords. Orders of the House of Lords, ca. 1717. (Mss 180)
• Social Protest Collection, ca. 1943-1992 [bulk dates 1965-1975]. (Mss 183)
• Davidson (Eugene) Papers, ca. 1917-2002. (Mss 185)
• Historia de Gabriel de Espinosa…, ca. 1600s. (Mss 189)
• Daneau, Lambert.  Selva d’Aforismi Politici. (Mss 193)
• Koran [Sudan], 1964. (Mss 198)
• Trade Catalog Additions, ca. 1850s-1970s. (Mss 200)   
• Die-Cut Advertising Literature, ca. 1883-1960. (Mss 202)
• Nuclear Age Peace Foundation Collection, ca. 1980s-2006. (Mss 203)
• Islamic Manuscripts Collection, ca. A.D. 1122-latter 1800s. (Mss 207)
• Bukowski (Charles) Poems, 2004-2007. (Mss 208)
• Tibetan Manuscript Leaves, ca. early 1800s. (Mss 210)
• Broadside Collection, ca. 1939-1991 [bulk dates 1960s-1980s]. (Mss 212)
• Mayer (Jacob Peter) Collection, 1910-1985 [bulk dates 1940s-1960s]. (Mss 215)
• Sheinbaum [Stanley K.] Collection, 1920-2009 [bulk dates 1950s-2000s]. (Mss 217)
• Simpkins (Herbert C.) Collection, ca. 1918-2000 [bulk dates 1970s-1980s]. (Mss 218)     
• American Almanac Collection, 1820-1829. (Mss 224)
• American Folk Music Photograph Collection, 1930s. (Mss 229)
• English Almanacs, 1767. (Mss 234)
• Capelli [Mark H.] Southern California Steelhead Watershed Archive, ca. 1919-2000. (Mss 242)
• Bukowski (Charles) Poems, ca. 1966-1994. (Mss 246)
• Nixon Presidential Photograph Collection, [ca. early 1970s]. (Mss 248)        
• Railroad Printed Ephemera Collection, ca. 1910s-1930s. (Mss 249)
• California Photograph Collection, ca. 1870s-1950s [bulk dates early 1900s]. (Mss 252)
• Center for the Study of Democratic Institutions / Princeton University Files, 1957-1969, [bulk dates 1962-1965]. (Mss 253)     
• George D. Eagleton Stereoview Collection, ca. 1860s-2004. (Mss 255)        
• Women’s Rights Scrapbooks, ca. 1868-1880. (Mss 260)
• Trade and Advertising Card Collection, ca. 1870s-1910s. (Mss 264)
• Posters of the 1960s, [bulk, latter 1960s]. (Mss 265)
• Gresham Family California Photograph Album, ca. 1900-1907. (Mss 268)
• Ramona Glass Slide Collection, ca. 1900-1910s. (Mss 269)
• California Missions and Santa Barbara Area Glass Slides, ca. early 1900s. (Mss 271)     
• Christensen [Vernon] Family Papers, ca. 1922-2009. (Mss 274)
• Kelly [Frank K.] Papers, 107-2008 [bulk dates 1950s-1970s]. (Mss 279)  
• William R. and Robert B. Moran Papers, ca. late 1800s-late 1900s. (Mss 282) 
• Gault [William Campbell] Collection, ca. 1937-1996. (Mss 284)
• Demian Katz Gamebook Collection (Mss 294)