- Data from Water Power Engineering, circa 1908.
- Another vintage Elmer Woodward ad from 1905.
- Elmer E. Woodward's state-of-the-art mechanical compensating type water wheel governor.
- Elmer E. Woodward's new water wheel governor from three patents.
- Data from Water Power Engineering, circa 1908.
- A.W. Woodward Friction Water Wheel Governors, circa 1890.
- Oldest known Woodward catalog from the Water Power District on Race Street
- Elemer E Woodward. Electrical World Volume 80, circa 8-5-1922-xx
- Woodward bulletin 33050.
- Woodward bulletin 33050.
- Woodward bulletin 33050.
- Woodward bulletin 33050.
- Woodward bulletin 33050.
- Woodward bulletin 33050.
- Woodward bulletin 33050.