MAYNARDVILLE — What was once farmland as far as the eye could see is now nearly 4,000 acres of second-growth forests with scenic lakefront views — due, in large part, to the Tennessee Valley Authority.

In celebration of the Tennessee state park system's 75th anniversary, Big Ridge State Park in Maynardville hosted a small celebration Tuesday afternoon, during which a full-scale copy of a 1935 TVA map of the region was unveiled.

The 4-by-11-foot map is an exact copy of the original, with added blue coloring for the proposed lakes, and will remain on permanent display in the park's main office....