- Cal Covert has his Fifty-Year Service Anniversary on June 1992.
- PRIME TIMES JUNE 1992.
- April 1986 Plant News.
- A Woodward Prime Mover Control Plant News History Project.
- August 1986 Prime Mover Control Supplement Plant News.
- A Woodward Prime Mover Control Plant News History Project.
- A Woodward Prime Mover Control Prime Times History Project.
- 11
- November 1958 Plant News.
- 8
- 1978 September Plant News.
- 2
- A Woodward Prime Mover Control Plant News History Project.
- A Woodward Prime Mover Control Plant News History Project.
- March 1960 Plant News.