Loran-C User Handbook from the Department of Transportation/Coast Guard dated May 1980. Text at the bottom of front cover: "COMDTINST MI6562.3 (old CG-462)". Green front cover with white text. Staple binding.
Si-Tex/Koden Model 767C Loran C Receiver Latitude-Longitude Coordinate Converter Operation Manual dated March 1982. White booklet with black plastic binding.