Victoria. 'Diagram of Gradients and Curves'.1) c1900s edition (inc. Outer circle (complete line), Wensleydale, Lancefield Jnc (Clarkefield)-Kilmore); faults. 2) 1927 edition (not the reprint); good condition. Both books contain the names of former owners, the c1900s has that of the late Gerald Dee, well-known and respected loco driver and rail-enthusiast. (2)