- Elmer Woodward's favorite magazine to read.
- Dam No 5 on the Potomac River 3
- FAIRMOUNT WATERWORKS PA 10
- Oconto Falls Wis 1927 003
- PMC MARCH 1988 003
- SANTA ANA RIVER HYDROELECTRIC SYSTEM CA 17g
- SHOP ORDER 3969 5
- Safe Harbor Hydro 3
- Vintage Hydroelectric Power Plant history.
- POTOMAC RIVER DAM No 4 HYDRO PLAN 3
- SHOP ORDER 3468 LINCOLN WOOLEN Co 6
- SHOP ORDER H1878 1938 010 001
- Specs for Three Rivers Mich Water Works 7
- Three Rivers Michigan 900kw
- McFarlane-Eggers Machinery Co 005 001