Rebecca Friedman, Assistant Art Librarian, rfriedma@princeton.edu (Marquand Library)
Gabriella Karl-Johnson, Architecture Librarian, gjk@princeton.edu (Architecture Library)
The Architecture Library has a collection of drawings and plans of latter 20th-century buildings, including some Princeton buildings, specifically:
Washington Oaks at Princeton
Social Dining Facility (Butler/Wilcox Hall)
Administrative Building
Married Student Housing
Swimming Pool Facility
Astrophysical Sciences Building
School of Architecture and Urban Planning Lecture Room
School of Architecture
Prospect House Restoration
Jr. Faculty Apartments
Firestone Court
Butler Housing Area
Woolworth Music Center (2)
Princeton Alumni Weekly, or PAW, may have featured campus architecture in its pages. Contact Mudd Library if interested in their physical card index to older issues, or try Google Books.