Fort Missoula, for nearly a century a military fort, is now a National Historic Place and park. In the park are a few of the pre 20th century buildings from the original 1877 fort and many buildings from the early 1900s. They have an eclectic collection of large artefacts, including machinery and tractors, a lookout tower, railroad engine and cars, a tipi burner, the old Drummond, MT RR station, an old school and an old mission, artillery and a historical museum. It's a great place to spend an afternoon or a whole day.
In a long pole shed toward the rear of the machinery area are a bunch of tractors, mostly tracked. This little
Cat TEN is in the group. 4,929 of these were made by Caterpillar from 1928 to 1932. Bearing serial number PT 259, this was a relatively early one. Their little 2.3 liter gasoline produced almost 15 HP at the drawbar and 18 at the belt at 1,500 RPM and produced a drawbar pull of just over their weight, at 4,575 lbs. Tiny as cats go, they weighed 4,500 pounds and crawled along in one of three gears, all slow.