- The Marquette Metal Products Manufacturing History Project.
- The Marquette Metal Products Manufacturing History Project.
- The Marquette Metal Products Manufacturing History Project.
- The Bureau of Reclamation's Hydro Power Plant History. 7.
- The Bureau of Reclamation's Hydro Power Plant History. 6.
- The Bureau of Reclamation's Hydro Power Plant History. 5.
- The Bureau of Reclamation's Hydro Power Plant History. 4.
- The Bureau of Reclamation's Hydro Power Plant History. 3.
- The Bureau of Reclamation's Hydro Power Plant History. 2
- The Bureau of Reclamation's Hydro Power Plant History. 15.
- The Bureau of Reclamation's Hydro Power Plant History
- The Boeing Company's 502 series jet engine.
- The Boeing Company's 502 series jet engine.
- The Boeing Company's 502 series jet engine.
- The Boeing Company's 502 series jet engine.