The model 'H' was a tricycle type, the model 'HFS'came with a fixed standard type front axle, and the 'HFA' which had an adjustable wide front axle. The 'H' was rated as a 25-belt horsepower unit equipped with a four cylinder 1XB Hercules engine. The 'H' was rated as a two-plow unit a weighed 3650 pounds. Production of the 'A's, 'D's, and 'E's resulted in an estimated 50,000 to 60,000 total units, whereas there were probably less than 500 each of the 'H's and 'I's made. In addition to tractors, the Gibson company was also engaged in the production of forklifts under Government contract for the Navy during the late 1940's and early 1950's.
Stories conflict somewhat and there was probably no one single reason for the company's demise.
A combination of factors including competition, and pressure to meet production quotas of forklifts at the expense of turning out tractors were probably the chief ingredients in the company's downfall as it was originally known. Wilbur Gibson died in 1959 at the age of 44 from a heart attack. Tractor production had already ceased in 1952 when the company was sold to Helene Curtis Industries of Chicago, Illinois, which, in turn organized it as a division of Fox Metal Company of Denver, Colorado. The intent was to reestablish tractor production in Denver. Instead for approximately seven months in 1953, tractor parts were sold out of the Denver plant but no tractors were made.