Scene in Arroyo Seco, Pasadena, about one and one-half miles north of Jet Propulsion Laboratory, showing a trail, ca.1920 

Devil's Gate in Pasadena's Arroyo Seco, looking south, ca.1920 

Devil's Gate in Arroyo Seco, Pasadena, looking south, ca.1920 

View of Arroyo Seco at Avenue 52 before installation of channel, ca.1930 

Fashion show at Pasadena's Hotel Vista Del Arroyo near the base of the Arroyo Seco Bridge, 1940-1950 

Birdseye view of the Arroyo Seco channel construction north of York Boulevard, December 7, 1933 

Arroyo Seco channel, looking north from a point 600 feet south of San Rafael Avenue near Rose Bowl, 1936 

Aerial view of the Arroyo Seco Parkway between Los Angeles and Pasadena, [s.d.] 

Devil's Gate in Arroyo Seco, Pasadena, looking south, ca.1920 

Aerial view of flooded Arroyo Seco near South Avenue 52, Los Angeles, 1938 

View of the Arroyo Seco Park and Channel looking northeast after the construction of the Pasadena Freeway, ca.1941 

Aerial view of Morris Dam, ca.1920 

Aerial view of the Arroyo Seco River and Avenue Forty-three in Los Angeles, ca.1938 

Pasadena panoramic view looking north, ca.1900 

Arroyo Seco Channel north of Avenue 52 at beginning of work on Arroyo Seco Parkway, ca.1940 

Dying Sycamore tree in Arroyo Seco, ca.1920 

Aerial view of a reservoir, ca.1920 

Aerial view of an unidentified reservoir showing the front side of a dam, ca.1920 

Aerial view of the Sawpit Dam, ca.1920 

View of Arroyo Seco Park and Channel looking northeast, prior to the construction of the Pasadena Freeway, ca.1940