- Flint and Walling, Inc. Celebrates Sesquicentennial
- Windmills and Railroads: A Successful Partnership [U. S. Wind Engine, Aermotor, Eclipse, Challenge]
- Clyde Stadel, A Tribute
- Nuts and Bolts – Opened or Closed: Taking Windmills Off Towers
- Then & Now – Challenge Windmill Company.
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