- Training course for hydro power operations.
- 7
- 19
- umn.31951p008294272-seq 261
- The Marquette Metal Products Manufacturing History Project.
- The Marquette Metal Products Manufacturing History Project.
- The Marquette Metal Products Manufacturing History Project.
- The Marquette Metal Products Manufacturing History Project.
- The Marquette Metal Products Manufacturing History Project.
- The Marquette Metal Products Manufacturing History Project.
- The Boeing Company's 502 series jet engine.
- The Boeing Company's 502 series jet engine.
- Closeup of the Woodward governor 400810 series control on the Boeing jet engine.
- The Boeing Company's 502 series jet engine.
- The Boeing Company's 502 series jet engine.