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.
There are a few Cats outside, as well as several in a long pole barn. This medium sized
Cat SIXTY is one that is forced to fend for itself out in the elements. An unknown number of these were made by Caterpillar from 1925 to 1931; this one came off the assembly line in 1927. The Caterpillar model Sixty was based on the Best Sixty, which had been in production since 1921. This model had a really huge engine of 18.5 Litres. Still using only four cylinders, each had a bore and stroke of 6.50x8.50 inches. The Sixty weighed 19,000 lbs., over four times the weight of a Cat Ten, so it needed all of the 73 hp produced at 650 RPM by its big slow turning engine. It was capable of producing 12,360 lbs. of drawbar pull. All of that 73 HP of power got to the ground through a three speed transmission.