From the hill above the railroad we can see a Chevrolet coup ...

Workers clean out the bottom of the canal adjacent to conduit ...

American Dam - Driving upstream dyke of coffer-dam; view south ...

American Canal - First excavation; Northwest dragline excavator; ...

American Dam; Cofferdam; view S.E from W. end of off foot ...

American Dam; N.W: Cor of E. coffer - dam; view W. from E. Bank ...

American Dam; E. Cofferdam, view from E. side of river. March ...

American Dam; view down stream from hill, west of axis. March ...

American Dam; E. cofferdam; view downstream from W. end of ...

American Dam; smelter arroyo improvement ;breaking concrete ...

American Dam; erecting platform steel; piers 6to9 ; view from N. ...

American Dam; Manhole No . 1 an 18" sewer line; view W. from ...

American Dam; panel No. 1 Unit 1.; grading completed; view S. ...

American Dam; piers No. 3 to 9 ; View S. W from N. dyke. April ...

American Dam; Smelter Arroyo improvement; pouring walls of W1/2 ...

American Canal; View S. from Sta . 78+50. April 30, 1937 at ...

American Canal; view from up stream from Sta. 75; Rock drillers ...

American Dam; Excav. for canal intake; Manholes No.1 and 2 ...

American Dam; interior of coffer dam; transit mixer pouring ...

American Dam; pouring concrete for pier No. 5: View N.W April ...

American Canal - Rock protection along river bank; view ...

American Dam - Coffer-dam and piers; view north from canal. ...

American Dam - Coffer-dam and piers; view southwest from canal ...