Oak Tree Country Club sits in West Middlesex, a small borough in western Pennsylvania's Mercer County, near the Ohio border. The course was designed by Ed Ault, a prolific regional architect who shaped numerous layouts across Pennsylvania, Ohio, and neighboring states during the latter half of the twentieth century. Ault's work typically emphasized playability for a range of skill levels while working within the natural terrain and budget constraints of community-oriented clubs. The course occupies rolling terrain characteristic of northwestern Pennsylvania, where gentle elevation changes and mature tree cover define the playing corridors. Ault's routing likely takes advantage of the property's natural contours, with doglegs and strategic bunkering that reward thoughtful course management. The design reflects the practical, member-focused approach common to many mid-century American courses built to serve local golfing communities rather than tournament play. Oak Tree Country Club functions as a traditional private club serving the West Middlesex area and surrounding communities in the Shenango Valley. The region's golf culture centers on accessible, year-round play when weather permits, with clubs like Oak Tree providing social and recreational anchors for their memberships. The course offers a straightforward test of golf shaped by its landscape, without the dramatic features or championship pedigree of more prominent Pennsylvania venues, but consistent with the character of many Ault designs that prioritize enjoyment and maintainability.