Exhibits in the rustic hills of western Pennsylvania preserve a remarkable mechanical history of America.


A collection of buildings, artifacts, and outdoor engine exhibits are part of an unusual museum that can be found near Little Sandy Creek, just off Colonel Drake highway 36, about 10 miles northwest of Punxsutawney.

An impressive collection of historic engines, many of them lovingly restored and maintained by volunteers, educates visitors about the evolution of internal combustion engine technology that put an end to the age of steam.

The Cool Spring Power Museum’s long-time director spent decades collecting and preserving hundreds of historic engines of all shapes and sizes. In a 2004 interview, Dr. Paul E. Harvey explained why the collection was important.

Interior of Coolspring Power Museum with many one-cylinder egines.

The Coolspring Power Museum opened in 1985 near Punxsutawney, Pennsylvania. It has the largest collection of historically significant stationary gas engines in the country, if the not the world. Photo courtesy Coolspring Power Museum.

“Internal combustion engines revolutionized the world around the turn of the 20th century in much the same way that steam engines did a century before,” noted Dr. Harvey, who co-founded the museum in 1985 about midway between between Punxsutawney and Brookville, Pennsylvania.

“One has only to imagine a coal-fired, steam-powered, airplane to realize how important internal combustion was to the industrialized world,” added Dr. Harvey, a medical doctor.

Coolspring Power Museum sign at museum.

The museum hosts many summer events, including a “History Day and Car, Truck & Tractor Show.” Photo by Bruce Wells.

According to Dr. Harvey, permanent exhibits at Coolspring include stationary gas “hit and miss” engines, throttle governed engines, flame ignition engines, hot tube ignition engines, and hot air engines ranging in size from a fractional horsepower up to 600 horsepower.

Many engine enthusiasts from around the country have sent significant pieces for display, he said. The grounds, as well as semi-annual shows, have expanded with visitors from Maine to California, as well as Canada and England.

Dr. Harvey explained that early internal combustion engines produced only a few horsepower and could not replace steam engines in most applications, but by 1890 they were powerful enough for most portable or remote operations as well as many small manufacturers.

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By 1900 the new power technology was replacing reciprocating steam engines for electric generation, Dr. Harvey noted. “By 1915 they were being considered for all but the largest installations where steam turbines have since dominated,” he added. Dr. Harvey and fellow enthusiast John Wilcox began collecting engines in the 1950s. Their collections were the basis of displays that would greatly multiply.

The museum is housed in 20 buildings that, besides its own large collection, contain many pieces placed there on loan. Dr. Harvey said the purpose of Coolspring was “to be the foremost collection of early internal combustion technology presented in an educational and visitor-oriented manner and to provide an operation that will gain support and generate substantial growth.”

Paul Harvey, co-founder of the Coolspring Power Museum in Pennsylvania, stands next to the 175 HP Otto engine.

Dr. Paul Harvey, co-founder of the Coolspring Power Museum in Pennsylvania, next to a 175 HP Otto engine he restored with help of museum volunteers. Photo courtesy the Coolspring Power Museum.

The collection documents the early history of the internal combustion revolution. Almost all of the critical components of today’s engines have their origins in the period represented by the collection (as well as hundreds of innovations no longer used). Some of the engines represent real engineering progress; others are more the product of inventive minds avoiding previous patents. All tell a story.

Although the museum’s focus is on stationary engines (with perhaps the largest collection in the world), Dr. Harvey explained that no museum of internal combustion engines would be complete without at least a few vehicles in its collection. Among the antique heavy trucks and semis, is a rare petroleum well service rig.

The Hanley & Bird Well Bailing Machine was designed to clean a well by lifting water, sand, and debris from the bottom of the well using a “bailer” attached to a cable, noted the museum director.

A Hanley and Bird Well Bailing Machine at the Coolspring Power Museum.

A “last of its kind” Hanley & Bird Well Bailing Machine from the Pennsylvania oilfields. Photo courtesy Coolspring Power Museum.

Five of the devices were built; the Coolspring Power Museum’s example is the only one to survive. “It was donated to the museum by EXCO Resources, the successor to H&B,” Dr. Harveys said. “It is very interesting as it uses a chain drive Mack rear end and a Ford front axle.”

Dr. Harvey recalled seeing the Hanley & Bird Well Bailing Machine driving through Coolspring on its way to service local natural gas wells. He said that the museum today displays it with the mast raised and ready to work. “It certainly shows the ingenuity of the local gas industry,” he reported.

The Coolspring Power Museum collection includes many engines used to power multiple wells in America’s first oilfields. The museum is off Route 36 midway between Punxsutawney and Brookville in western Pennsylvania.

As the steam engines revolutionized the world in the 1800s, the internal combustion engines on exhibit at the Coolspring Power Museum did the same at the start of the 20th century, according to Dr. Harvey.

“You have only to imagine a coal-fired, steam-powered, airplane to realize how important internal combustion was to the industrialized world,” the doctor added with a chuckle. The Coolspring Power Museum hosts events in the spring and summer, including the popular “History Day and Car, Truck & Tractor Show.”


Recommended Reading:  Around Titusville, Pa., Images of America (2004); Myth, Legend, Reality: Edwin Laurentine Drake and the Early Oil Industry (2009); Oil on the Brain: Petroleum’s Long, Strange Trip to Your Tank (2008); A History of the New York International Auto Show: 1900-2000 (2000). Your Amazon purchase benefits the American Oil & Gas Historical Society. As an Amazon Associate, AOGHS earns a commission from qualifying purchases.


The American Oil & Gas Historical Society preserves U.S. petroleum history. Become an AOGHS annual supporting member and help maintain this energy education website and expand historical research. For more information, contact bawells@aoghs.org. Copyright © 2021 Bruce A. Wells. All rights reserved.

Citation Information: Article Title: “Cool Coolspring Power Museum.” Authors: B.A. Wells and K.L. Wells. Website Name: American Oil & Gas Historical Society. URL: https://aoghs.org/energy-education-resources/cool-coolspring-power-museum. Last Updated: November 1, 2021. Original Published Date: September 1, 2005.


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