- Ballooning (167)
- Balloons Materials Testing (167)
- Balloons Scientific Applications (167)
- University of Minnesota Airport (167)
- University of Minnesota (123)
- Minneapolis Campus (78)
- Duluth Campus (32)
- St. Paul Campus (25)
- Annual Reports (12)
- Social Life and Customs (12)
- American Psychological Association (11)
- Appleton Century Crofts, Inc (11)
- Boring, Edwin Garrigues, 1886 1968 (11)
- Buildings. Washington Avenue Parking Ramp (11)
- Burroughs Corporation (11)
- Century Psychology Series (11)
- Elliott, Mathilde Rice, 1896 1988 (11)
- Ferrin, Dana Holman, 1886 1960 (11)
- Goodenough, Florence Laura, 1886 1959 (11)
- Paterson, Donald Gildersleeve, 1892 1961 (11)
