Oak Grove project, temporary wagon bridge across North Fork
Oak Grove project, tractor powered sawmill
Oak Grove project, trip to intake and Big Bottom
Oak Grove project, trip to intake and Big Bottom
Oak Grove project, trip to intake and Big Bottom
Oak Grove project, trip to intake and Big Bottom
Oak Grove project, trip to intake and Big Bottom
Oak Grove project, upper dam site at intake
Oak Grove project, upstream from lower dam site at intake
Oak Grove project, view of dam
Oak Grove project, view of Frog Lake showing concrete cradles
Oak Grove project, view of penstock line from office of Hurley-Mason Company office
Oak Grove project, view of road at Rock Point above upper dam
Oak Grove project, water filling pond less than one hour after closing dam
Oak Grove project, welder working at powerhouse
Oak Grove project, Willamette Iron and Steelworks pipe traveler
Oak Grove project, Wisco pipe traveler
Oak Grove project, wrecked engine and flat from river bank at Big Eddy
Oak Grove Tunnel, party of officials at northern portal
Oak Grove unit #1
Oak Grove, interior of tunnel
Oak Grove, interior of tunnel
Oak Grove, new electric shovel at Cazadero quarry
Old Station A during flood
![Oral history interview with Monroe Sweetland [Sound Recording 01]](/images/generic-icons/audio.png)
Oral history interview with Monroe Sweetland [Sound Recording 01]
Oral history interview with Monroe Sweetland [Sound Recording 02]
Oral history interview with Weldon T. Hibbard [Sound Recording 01]
Oral history interview with Weldon T. Hibbard [Sound Recording 02]
