Black and white photograph of a large group of men and women having a picnic in the San Mateo Recreation Park.

Black and white photograph of a large group of men standing around a picnic table in the San Mateo Recreation Park.

Black and white photograph of a picnic area in the San Mateo Recreation Park.

Black and white photograph of a3 men talking in the San Mateo Recreation Park at La Honda.

Black and white photograph of a man holding a glass bottle and smiling.

Two copies of a black and white group photograph of the City Engineer's Baseball Team. O'Shaughnessy is wearing a suit and hat, and is standing in the back row.

Two copies of a black and white group photograph of the City Engineer's Baseball Team. O'Shaughnessy is wearing a suit and hat, and is standing in the back row.

Black and white group photograph captioned Bayshore Boulevard, Supervisor Havenner.

Black and white group photograph captioned Bayshore Boulevard, Visitacion Valley. It shows a large crowd spectating, with a marching band setting up their instruments in the background.

Six black and white photographs of the O'Shaughnessy dam.