Original, Chevrolet Service News (technical bulletin) Volume 12 Number 10 dated October, 1938. These bulletins were released to service technicians with additional service tips after the service manuals were printed. This issue covers: spring lubrication, use of radiator rust preventative with bushing and ball bearing type water pumps, circuit breaker, filling of radiator where over-flow return tank is installed, installation of clutch fork ball, and stake pocket. A little soiled and worn. Overall in good condition.