Lawrence Farmers Market, 7 a.m.-11 a.m., 824 N.H.
Dog Days fall workout, 7:30 a.m., behind Kizer-Cummings Jewelers, 833 Mass., free.
City compost giveaway, 8 a.m.-4 p.m., 1420 E. 11th St.
Family program: "S is for Schoolhouse," 10:30 a.m., Watkins Museum of History, 1047 Mass, free, 841-4109.
White Glove Tour of the archives, 10:30 a.m., Dole Institute of Politics, 2350 Petefish Drive near the Lied Center at Kansas University.
Birthday Bash Open House, for Hidden Valley Camp's 50th anniversary, 2 p.m.-5 p.m., northwest corner of Kasold Drive and Bob Billings Parkway.
Clinton Lake Museum Barbecue Fundraiser, 6 p.m., museum site at Bloomington Park west of Clinton Lake. Suggested donation is $10 per plate.
Lawrence High School 40th reunion dinner and party, 6 p.m.-midnight, Knights of Columbus, 2206 E. 23rd St., more events at www.lhs1966.net.
Haskell University Welcome-Back Pow Wow, 7 p.m., Haskell Pow Wow Grounds (or Coffin Complex in case of rain), free.