1964.
Salmon spawning survey of Cooper Mill Gulch, Yager Creek, Van Duzen River. 12/9/1964. Memo to file from Dallas Huston and Jim Rinehart, CDFG, Eureka, CA. 1 p. Contains survey results of Cooper Mill Creek: stream conditions, section survey, and fish observations. 

1973.
Postcard to Department of Fish and Game Redding. Shows picture of anglers.