Old cienega on property of N.A. Gray.

[Man leading mules]

[Power poles through valley]

Careless excavation by teams on Howard's work.

Flexible joint in pipe for building sand core in the Natomas Levee.

Drilling test holes on Elizabeth Tunnel.

man with drilling equipment

Red Rock Canyon west of Barrel Spring.

"(Jan. 1907)"

1907-01-01

West abutment, south Haiwee Dam

"showing trench and pool between toes."

Yuba River debris from hydraulic mining

"these bars from 10 to 30 ft. deep and miles in length. The city of Marysville is probably 10 ft. below the ordinary level of Yuba River."

Completed arch showing interior condition after removal of forms

"conduit on curve of 3000' radius, Catskill Aqueduct, Peekskill Division sta. 202+50."

52 animal team hauling steel for Jawbone siphon.

horses, mules, men, hauling siphon section

Regulating gates in main canal, Owens Valley.

men working in canal

Siphon 13, looking southwest.

Mountains above Oak Creek.

horses and wagon

Fairmont Reservoir from left abutment

"looking south past right abutment to north portal of Elizabeth Lake Tunnel. (J.B.L. - June 18, 1907)"

1907-06-18

Detail of single and double trees for three up.

[Man in snow]

[Canal and gates.]

Portable conduit form tried in conduit near Mojave.

Silver Lake Dam, looking north.

men and horses, working on dam

Alabama Hills section, steam shovel No. 12.

Dredge #1, showing view from the front.

San Francisquito Canyon.

"(Panuelee - Jan. 1907)"

1907-01-01

San Lucas Bridge.

men working in water

Section 3, Saugus Division, tunnel portal.