- Oldest known Woodward catalog from the Water Power District on Race Street
- A.W. Woodward Friction Water Wheel Governors, circa 1890.
- Data from Water Power Engineering, circa 1908.
- Elmer E. Woodward's new water wheel governor from three patents.
- Elmer E. Woodward's state-of-the-art mechanical compensating type water wheel governor.
- Another vintage Elmer Woodward ad from 1905.
- Data from Water Power Engineering, circa 1908.
- Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governor patented in 1912.
- The Woodward Governor Factory on Mill Street in the Water Power District in Rockford, Illinois(1910-1941).
- Elmer E. Woodward's state-of-the-art oil pressure relay valve water wheel governors patented in 1912.
- TEXTILE WORLD 1909.
- Woodward type D mechanical governor application.
- Woodward at 660 Race Street in the RKFD Water Power District.
- WOODWARD HYDRAULIC GOVERNORS. NEW FOR THE YEAR 1912.
- Elmer Woodward's Power Control publication from 1911.