The Montana Auto Museum is housed in the Old Montana Prison in Deer Lodge, Montana. The museum displays more than 150 automobiles. Shown below are some of the trucks which are on display in this museum.
REO:



Shown above is a 1928 REO Speedwagon. REO was originally founded by Ransom E. Olds in 1904. REO began building trucks in 1908 and introduced the Speedwagon in 1915 and by 1925 it had become the most produced truck since 1911 with sales over 125,000.
International:

Shown above is a 1928 International Grain Truck made by the International Harvester Company.
Chevrolet:

Shown above is a 1934 Chevrolet Pickup.


Shown above is a 1946 Chevrolet Pickup. It sold for $757.

Shown above is a 1970 Chevrolet El Camino. It sold for $5,190. The El Camino was originally introduced in 1959 in response to the Ford Ranchero. Production ended in 1960 and then resumed in 1964. The 1970 El Camino is considered third generation and was based on the Chevelle station wagon.
Dodge:

Shown above is a 1929 Dodge Brothers Truck. It sold for $1,330.

Shown above is a 1951 Dodge M-37 Military Truck. It was first used in the Korean Conflict. It sold for $5,850.

Shown above is a 1955 Dodge Power Wagon Truck. It sold for $2,317. The Power Wagon was a four wheel drive truck which produced from 1945 through 1980. It was originally based on the Dodge military trucks produced during World War II.
Diamond T:

Shown above is a 1935 Diamond T Logging Truck. The Diamond T company was founded by Charles Arthur Tilt in Chicago in 1905.
Ford:

Shown above is a 1955 Ford F-100 Pickup. It sold for $1,460. The F series Ford Pickups were first introduced in 1948.
Jeep:

Shown above is a 1943 Military Jeep 4 X 4.
Seagrave:

Shown above is a 1915 Seagrave Chemical Fire Truck. According to the display:
“Frederick Seagrave started out by building ladders in 1881. His firm grew and prospered, and in 1907, the company’s first self-propelled fire truck was unveiled. Seagrave was soon established as an innovator—introducing the first automatic pressure regulator in 1912, and the first self-contained auxiliary cooling system in 1915.”