Two isolations of the Montana snowshoe hare serotype of the California encephalitis virus group were made in the summer of 1968 from materials collected at Rochester, Alberta, Canada. One isolation was made from the blood of a snowshoe hare approximately 24-days old while the other was from a pool of unengorged Aedes communis group mosquitoes. The isolation of the agent from mosquitoes demonstrates the continued endemicity of the virus in the area. The recovery of the virus from the hare represents the second time a California encephalitis virus has been recovered from a snowshoe hare and relates the virus recovered from the mosquito to the known serology of the virus in hares.