Photos: A Visit to the Mack Trucks Museum

This 1905 Mack -- chassis number 9 -- is the oldest known Mack truck in existence. Photo: Jack Roberts

This Mack D42T cabover dates from 1955. Power was supplied by a 6 cylinder gas engine. Photo: Jack Roberts

A mere 285 horsepower was deemed plenty in 1984 for this Mack DM886SX 3089 tandem axle tractor. Photo: Jack Roberts

The newest truck in the collection is this beautifully restored 1950 LFT model with vintage Freuhauf trailer. Photo: Jack Roberts

Whitewall tires and a surprisingly aerodynamic design highlight the 1940s vintage Freuhauf trailer. Photo: Jack Roberts

This 1952 Mack A54B features a Mack Thermodyne diesel engine. Photo: Jack Roberts

Mack and UPS go back a long way. This 1978 R767ST model features a 6 cylinder Cummins diesel engine. Photo: Jack Roberts

A six cylinder Mack diesel sits under the hood(s) of the 1962 Mack B67. It put out 187 horsepower at 2,100 rpm. Photo: Jack Roberts

This 1962 Mack B67 was donated to the museum by the Barillo Family. Photo: Jack Roberts

Mack built mining trucks, too, like this 1963 M18X model. Photo: Jack Roberts

The 1935 Mack BM has a sleeper. It can accomodate one person (barely). And you have to climb over the bench seat to get in or out of it. Photo: Jack Roberts

This 1935 Mack BM model was a typical "long haul" spec for the time. Photo: Jack Roberts

This Mack B6 is a 1955 model. It's gas-powered, with a 6 cylinder engine putting out 185 horsepower. Photo: Jack Roberts

This little gem of a dump truck is a famous Mack B6 Series model -- which dominated vocational markets in the 1950s and '60s. Photo: Jack Roberts

Mack Junior pickups from the 1930s are among the more popular trucks on display at the museum. Photo: Jack Roberts

This Mack Junior is fitted with a dump body for light construction work. Photo: Jack Roberts

This 1923 AB model features a dump body and wood frame cab. Photo: Jack Roberts

This 1979 Mack Cruise-Liner is the most unusual truck in the collection. It's an experimental model powered by a turbine engine. Photo: Jack Roberts

Another Mack musem highlight is this 1939 open-top fire engine. Photo: Jack Roberts

A close-up at the decidedly barebones cab in the 1939 Mack fire engine. Photo: Jack Roberts

The 1950 LFT is powered by a Mack Lanova diesel engine cranking out 165 horsepower at 2,000 rpm. Photo: Jack Roberts

The front end of the Mack R7677StT was a common sight on American highways in the 1970s and '80s. Photo: Jack Roberts

Gullwing hoods allow good engine access on the 1962 Mack B67. Photo: Jack Roberts

Power for this 1927 Mack was supplied by 471 cubic inch, 4-cylinder gas engine producing 69 horsepower. Photo: Jack Roberts

This 1927 Mack was one of the last of the Brass Era trucks the company built before switching to a more modern design. Photo: Jack Roberts

Access to the experimental turbine engine on the '79 Mack Cruise-Liner was fairly conventional. Photo: Jack Roberts

Here's a close-up of the '79 Cruise-Liner's turbine engine, which produced 550 horsepower. Photo: Jack Roberts

Rear view of the 1947 Brockway -- which was a surprisingly modern design. Photo: Jack Roberts

This Mack-built 1947 Brockway has a 6 cylinder Continential gas engine putting out 145 horsepower a5 2,800 rpm. Photo: Jack Roberts

This 1933 Mack AB model was a move toward an more modern design. It featured a 46 horsepower gas engine. Photo: Jack Roberts