Holt tractor

July–November 1916 They were widely used by the British, French and American armies in the First World War for hauling heavy artillery including the BL 9.2-inch howitzer and the BL 8-inch howitzer. Around 2,000 Holt 75s along with 698 Holt 120s and 63 Holt 60s saw military use during the war. The French Schneider CA1 and Saint-Chamond and German A7V tanks were based on Holt tractors. == Specification ==

There were at least three models used for military purposes: the Holt 75, the Holt 120 and to a lesser extent the Holt 60. The Holt 75 was first produced in 1913. In addition to US production 442 Holt 75s were built in Britain by Ruston & Hornsby in Lincoln. and was developed in direct response to a request for a heavy artillery tractor. ==Literature==

• Holt Tractors Photo Archive: An Album of Steam and Early Gas Tractors, being towed by a Holt tractor at the Battle of the Somme, 1916 ==References==