From the club website:

Golf's most legendary players have walked these greens. So did the magnates of the steel industry.  Since 1923, among the majestic hills of Western Pennsylvania, those who shaped the very fabric of the Johnstown community came together in recreation and camaraderie.

Designed and later altered by renowned architect A.W. Tillinghast, Sunnehanna's challenging and enjoyable golf course stands as a testament to American golf.

Home to the Sunnehanna Amateur Tournament for Champions, it meanders 360 degrees around a remarkable 1920's clubhouse, a gathering place for family-oriented activities, distinctive social engagements and delightful dining experiences.

On September 8, 1923, Sunnehanna Country Club opened. The name Sunnehanna was the Native American name for the river now known as the Stoneycreek, meaning "slow moving stream". Out-of-town members traveled to Johnstown in their private Pullman Cars for the grand  opening.  Sixty players played in the first golf tournament. A large audience surrounded the swimming pool and watched an aquatics show.  Inside, an orchestra furnished music for dancing. Others milled about the Club's corridors spending time in the billiards room and the bowling alleys.  When complete, Sunnehanna Country Club was a source of pride not only for its members, but the community at large.  The spectacular views coupled with the course, swimming pool, tennis courts, bridal path, and clubhouse, rivaled other big city clubs.  Activities abounded at the Club.  Sunnehanna Country Club had become what its founders had hoped for, the center of the social lives of the Club's members and their families.

In 1934, the clubhouse was almost entirely renovated.  William Flynn, another of golf's finest architects, was hired to redesign the course.  Sunnehanna Country Club's survival through the Depression and World War II was no small feat.  From 1932 through 1952, 200 new clubs opened, and 600 disappeared.