In the 1920s, State Highway 112 followed today's Route 77, and part of Route 17, from Guilford through Durham to Middletown.

The modern Route 112, commissioned in 1932, has not changed since then. It follows a route over which iron ore was once transported in saddle-bags from the numerous Salisbury workings to Lime Rock forges.

• United States Work Projects Administration (WPA). "Connecticut: A Guide to its Roads, Lore and People." Boston: Houghton Mifflin, 1938.

• Route 112 Ends (Photos; Doug Kerr at state-ends.com)