O'Neil

O'Neil designed at least two golf courses in northern Illinois during an era when the region saw substantial country club development. The architect's work includes Barrington Hills Country Club in Barrington, Illinois, and Crystal Lake Country Club in Crystal Lake, Illinois. Both layouts reflect the rolling terrain and natural features characteristic of the Chicago metropolitan area's outer suburbs.

Barrington Hills, with a Course Vaults score of 8.20, represents O'Neil's higher-rated design in the available record. Crystal Lake Country Club, scoring 7.36, demonstrates the architect's engagement with similar community-focused private club projects. Without additional archival documentation, the precise dates of construction and the full scope of O'Neil's portfolio remain unclear, though these two courses indicate active design work in Illinois country club circles.

Sources: Course Vaults course links only.