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Ontario City Library, Robert E. Ellingwood Model Colony History Room For more information on copyright or permissions for this image, please contact the Robert E. Ellingwood Model Colony History Room at the Ontario City Library at 909-395-2206 or email@example.com.
The program for the Colorado River Aqueduct completion ceremonies. The program includes the cities included in the Metropolitan Water District of Southern California and the people involved in the aqueduct.