This collection contains letters and newspaper clippings pertaining to the development of Walter J. Hayes State Park near Clinton, Michigan. Herman Halladay, a Clinton resident and Secretary of the Michigan State Board of Agriculture, was one of the first to suggest creating a state park at Wamplers Lake in the heart of the Irish Hills. Interest in the project was aroused through Halladay's friend, T. F. Marston, who was with the State Conservation Department. Through the help of the members of the Clinton community who helped purchase the land, Wamplers Lake became the site of Hayes State Park in the early 1930s.