A lot of these landmarks are still standing including Huntsman Center, Marriott Library, University Union, Kingsbury Hall, Park Building, and the Fieldhouse building.
Other locations like the golf course (now gone), the stadium (modified for the 2002 Olympics), Medical Center (now University Hospital which keeps growing), and University Student Housing (East and West University Village student housing, now undergoing demolition and rebuild) have undergone significant changes.
The prominent “twin towers” in this illustration are the Medical Plaza Towers student housing. That twin towers term certainly did not stand the test of time.
The second image is the full size showing the entire illustration.