L89, Watford, September 1969
LT 0-6-0PT No. L89 has arrived at Watford station and left its train in the loop, it is now waiting to crossover to take water from the tank on the platform end. Once its tanks are full it will return to its train to retrace its steps back to the tip at Croxley, accessible only from the up line. September 1969. Slide No. 4074.
From London Transport Steam