The Los Angeles City Fire Department ordered this custom built bulldozer transport from Crown Coach in 1960.  She was designated Tractor Transport 1, carried serial number F1223 and assigned LA City Shop number 60073.  F1223 was powered by a Hall-Scott gasoline engine with an manual transmission and had a large winch mounted on the frame directly behind the cabinets.  A pulley is visible just to the right of the vertical exhaust stack.  The bulldozer was an Allis-Chalmers HD16 and carried shop number 44474.  The 3 axle trailer was provided by Callahan Manufacturing.. Sadly, this entire rig was destroyed when it was overrun by a wildfire in October of 1967.