- Sara Roberson Papers (17)
- Scott Walker Collection of Graywolf Press (7)
- Seed and Nursery Catalogs (1159)
- Select Committee for Lesbian, Gay and Bisexual Concerns Records (20)
- Senior and Agrarian School of Agriculture Yearbooks (51)
- Sharron and Oren Steinfeldt Collection (7)
- Sheeko - Somali Youth Oral History Collection (4)
- Sherlock Holmes Collections (461)
- Sidney Cohen Papers (4)
- Small-scale Food Initiatives in Southwest Minnesota (20)
- Social Work Council, Social Welfare & Human Services Assemblies (104)
- Social Work Today (71)
- Social Work Yearbooks, 1929-1960 (14)
- Soviet Jewry Action Newsletter (143)
- Soviet Women - Old Lives, New Lives Oral History Project (20)
- State Governments Social Welfare Publications Collection (11)
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- Stock Plan Books (12)