Collection
- American Terra Cotta Collection (5900)
- William Gray Purcell Papers (2413)
- Cathedral of St. Paul, Construction Letters, 1907-1915 (1429)
- Liebenberg and Kaplan Papers (1310)
- Northwest Architectural Archives General Collection (475)
- Wigington Pemberton Family Papers (447)
- John H. Howe Papers (393)
- Edwin H. Lundie Papers (300)
- William A. French Furniture Company Collection (291)
- Minneapolis Architecture, 1848-1908 (283)
- Forecast Public Art Collection (258)
- L.S. Buffington Papers (109)
- Close Associates Papers (105)
- Ellerbe Architects Papers (105)
- Pioneer and Endicott Buildings Collection (83)
- Marilyn Chiat Collection (75)
- William Channing Whitney Collection (75)
- Larson and McLaren Papers (54)
- C. P. Pesek Collection (29)
- Stock Plan Books (12)