Saturday: Earth Day Parade & Celebration, 11 a.m., downtown Lawrence and South Park.
April 29: Forty-seventh annual Auto Swap Meet, 10 a.m.-5 p.m., Douglas County Fairgrounds, 2110 Harper St.
May 2: Art in the Park, 10 a.m.-5 p.m., South Park, 1200 Mass.
May 7-8: Haskell Indian Nations University Commencement and Native American Pow-Wow, 23rd and Barker streets.
•Lawrence Sertoma 48 BBQ Cookoff, Broken Arrow Park, 28th and Louisiana streets.
May 16: Kansas University commencement.
May 22: Art Tougeau parade, noon, downtown Lawrence.
June 3: Annual Downtown Lawrence Film Festival kickoff, 9:15 p.m., Ninth and New Hampshire streets.
June 5: 154th anniversary of the Battle of Black Jack, 9 a.m.-8 p.m., Black Jack Battlefield, 161 E. 2000 Road, Wellsville.
June 6: Kansas Ironman 70.3, Clinton State Park.
June 12: Annual Outdoor Downtown Sculpture Exhibition, 5:30 p.m., Lawrence Arts Center, 940 N.H.
June 25-26: St. John’s Mexican Fiesta, 6 p.m.-11:30 p.m., St. John’s, 1234 Ky.
June 26-27: Lecompton Territorial Days, Lecompton.