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Photograph depicts a ditch cut through a forested landscape.

Photograph depicts a gas (?) shovel digging out a ditchline through a forested landscape.

Photograph depicts the front end of a steam shovel in a cleared gravel area in front of a forested landscape.

Photo depicts a large sled loaded with large metal tubing, a tent and a pile driver(?)

Photograph depicts a steam shovel operating in a ditch cut through a forested landscape. Handrwitten annotation on recto of photograph: "steam shovel sec. #3 July 15th"

Photograph depicts a caterpillar tractor and a bulldozer working on a ditch cut through a forested landscape. Handwritten annotation on recto reads: "see #1 cut go wide on top". Handwritten annotation on verso reads: "caterpiller tractor and bulldozer working on ditch"

Photograph depicts a wooden trestle constructed along a steep cliff through a wooded environment. Handwritten annotation on verso reads: "Trestle work through upper canyon 1/2 mile below intake, Germansen Placer Ltd."

Photograph depicts a shallow ditch cut into rocky terrain that leads through a forested landscape.

Photograph depicts a sideview of a shovel digging a ditch through a forested hillside. Handwritten annotation on recto of photograph: "One of deepest cuts, 1 yd. P & H, shovel 36 ton, floor of ditch is 15 feet length, 10 miles". Handwritten annotation on verso of photograph: "Germansen shovel in deep cut on ditch construction 1939".

Photograph depicts a line of wooden piles that have been driven into the ground and lead through a forested landscape. Handwritten annotation on verso of photograph: "part of flume construction piles driven down to refusal".

Photograph depicts an unidentified man standing on a hillside in front of a pile driver located in a forested landscape.

Photograph depicts an access road leading through a forested environment.

Photograph depicts a gas (?) shovel digging a ditchline through a forested area.

Photograph depicts two unidentified men working on a wooden flume located in a forested landscape. Handwritten annotation on verso of photograph states: "flume".

Photograph depicts three piles of stacked lumber located in a forested landscape. Annotation on verso of photograph reads: "Lumber for flumes. Co. has its own sawmill"

Unidentified mining excavation equipment (might be a type of drill) located in front of a forested landscape.

Photograph depicts several long logs laid out across a wide ditch with a forest landscape in the background. Handwritten annotation on verso of photograph: "Early in April trees put across ditch to make footing for caterpillar tractor".

Photograph depicts four men standing in front of a float plane on the shore of a lake surrounded by their bags. Annotation on verso of photograph reads: "Leaving Stuart Lake by plane, Left to right: Mason, Keith, Ferguson, MacMillan (Pilot)"

Photograph depicts a flooded rocky terrain with a forest landscape in the background. Annotation on recto of photograph reads: "Flattened to grade by Bulldozer, ready for shovel to dig. Sec. #2. Ground still very wet. Frost just out."

Photograph depicts a large cut ditch in the forested landscape. Shovel visible in distance. Annotation on recto states: "Portoin(?) of sec. #1"

Photograph depicts a bulldozer operating in a large ditch constructed within a forested landscape.

Photograph depicts two unidentified men working on the side of a rocky cut in a wooded landscape. Handrwitten annotation on recto of photograph: "compressor on rock cut sec. #4"

Large mechanized shovel working on a logged hillside. Annotation on recto of photograph states: "Shovel on sec. #3 working up grade towards sec. #2"

Photograph depicts a wooden flume being constructed along a hillside through a forest landscape. Handrwitten annotation on recto of photograph: "Flume over pile trestle, sec. #1, 8ft. wide"

Photograph depicts a wooden pile trestle that leads through a wooded landscape. Annotation on recto of photograph reads: "Pile tressle upper end. Sec.#1. Bents 12" centers - 3 only 12" piled driven to refusal; caps 10" x 12" "

Photograph depicts a man leaning over in front of a tall wooden pile driver in a forest environment. Annotation on recto of photograph reads: "Pile driver sec.#1. This is a gravel point"

Photograph depicts a bulldozer convoy pulling empty flats through a forested landscape.

Photograph depicts a sled dog looking back at other sled dogs and a wagon loaded with sleds located on a wooden road through a forested area.

Photograph depicts two men (O'Brine on left) standing in front of a log building. Handwritten note on verso reads: "Consulting engineer for Crocker 1st National Bank, San Franscisco. Examining (?) Fleuving & Downey Leases with object of taking in dredge."