Walnut Creek (Calif.) -- History -- Photographs.; Library buildings -- History -- Walnut Creek (Calif.) -- Photographs.; Local history -- Contra Costa County (Calif.) -- Photographs.;
Ygnacio Valley Library Chronology:
Contra Costa County Board of Supervisors accepts gift of 1.15-acre site from Nellie G. Casey (November 25, 1969).
County Board of Supervisors with consent of Cities of Concord and Walnut Creek forms County Service...