- Woodward draft revision for 1996.
- The Woodward Way.
- The Woodward Constitution
- The factory where Amos Woodward developed his first patented governor in 1870.
- The Amos Woodward machine shop history in Rockford, Illinois.
- Rockford Illinois history with Amos W. Woodward information.
- Oldest known Woodward catalog from the Water Power District on Race Street
- Elemer E Woodward. Electrical World Volume 80, circa 8-5-1922-xx
- Circa 1905.
- BIG W history data.
- Woodward Governor Company history.