[5] In August 1989, construction began on an $11 million expansion of the library that doubled the size of the facility.

[6] Constructed by Wildish Building Company and designed by architectural firm Skidmore, Owings & Merrill, the expansion added the curved glass wall on the east face of the building providing views of the South Park Blocks.

[11][12] After demolishing the home and preserving the tree in the mid 1960s for the first phase of the library, the decision to build around the tree was made in March or April 1986 on the recommendation of architects Skidmore, Owings & Merrill, PSU's Library Addition Committee, the campus community, and the city’s  foresters.

[13] [11] The Millar Library was remodeled in 2001 at a cost of $2.8 million to create a learning center, technology upgrades, and new furnishings.

[16] Branford Price Millar Library is housed in a six-story building on the PSU campus.

[21] The library manages PDXScholar, the open access, digital, institutional repository for the university.