TOPKEA, Kan. (AP) — Volunteers will be teaming with officials at three Kansas Civil War historic sites in April to clean up grounds and make improvements.

The efforts are part of Park Day sponsored by the Civil War Trust that will organize volunteers nationwide to clean up nearly 100 sites in 26 states.

Volunteers will be deploying on April 5 at the Black Jack Battlefield and Nature Park near Lawrence, Fort Blair near Baxter Springs and Constitutional Hall in Lecompton. Crews will be raking leaves, hauling trash and installing landscaping at the sites.

The Civil War Trust is a nonprofit battlefield preservation organization created to preserve the nation’s Civil War heritage.