Construction workers and heavy equipment, including a crane, are shown at the site of a major expansion to the San Francisco State University library. Steel reinforcement bars (rebar) and concrete forms in the foreground indicate early structural work for the building’s foundation. This photograph documents a period of rapid campus growth during the late 1960s–early 1970s, when new academic facilities were added to accommodate increasing enrollment. The expansion of the university library—later named the J. Paul Leonard Library—was part of this broader development of the Lake Merced campus.