Antique Show & Sale, sponsored by the Pilot Club of Lawrence, 11 a.m-4 p.m., Douglas County 4-H Fairgrounds, Building No. 21, $2 admission for unlimited entry, 843-6219.
Halloween storytelling, with Priscilla Howe, 2 p.m., Raven Bookstore, 6 E. Seventh St., free, 749-3300.
Territorial Capitol groundbreaking re-enactment, 2 p.m., Territorial Capital Museum in Lecompton.
Day of Prayer and Contemplation for the people of Lawrence suffering poverty and crisis; all day; 3 p.m. convocation in South Park.
Immunization clinic by the Lawrence-Douglas County Health Department (no flu shots), 8:30 a.m.-11:30 a.m. and 1 p.m.-8 p.m., 200 Maine, 843-0721.
Douglas County Commission meeting, 8:30 a.m., county courthouse, 1100 Mass.
Trick or treat party, by the American Taekwondo Association Black Belt Academy, 4 p.m.-6 p.m., 1540 Wakarusa Drive, free, register by calling 749-7337.
Halloween concert and costume contest, with the Seem-To-Be-Players, 4:30 p.m., Lawrence Arts Center, 940 N.H., $5 tickets, 843-2787.
Safe trick-or-treating with the Pioneer Ridge residents, 6:30 p.m.-8 p.m., Pioneer Ridge Retirement Community, 4851 Harvard Road, free admission, families welcome.
Lecture: "Insider's Perspective of How Bush Won," by Matthew Dowd, chief campaign strategist for Bush-Cheney 2004, 7:30 p.m., Dole Institute of Politics, 2350 Petefish Drive, free admission.
Explore Evolution, the new multimedia exhibition at Kansas University Natural History Museum and Biodiversity Research Center. The exhibit will be on display for about two years. Hours, 9 a.m.-5 p.m., Monday-Saturday and noon to 5 p.m., Sunday. Free. For more information, visit www.nhm.ku.edu.
Flu shots, sponsored by the Lawrence-Douglas County Health Department, 9:30 a.m.-10:30 a.m., First United Methodist Church, 402 Elmore St., Lecompton, $15 for babies and $20 for adults, 843-3060.
Screenings for people 60 and older by the Lawrence-Douglas County Health Department, 9:30 a.m.-10:30 a.m., Lecompton United Methodist Church, 402 Elmore.
Immunization clinic by Lawrence-Douglas County Health Department (no flu shots), 9:30 a.m.-11:30 a.m. and 1 p.m.-4:30 p.m., 200 Maine, 843-0721.
Musical Interludes, for all ages, 10:30 a.m., Lawrence Public Library Auditorium, 707 Vt., no registration required, 843-3833 ext. 121.
Big Brothers Big Sisters of Douglas County informational meeting, 5:15 p.m., 1525 W. Sixth St., Suite A, 843-7359.
Lawrence City Commission meeting, 6:35 p.m., City Hall, Sixth and Massachusetts streets.
Forum on Medicare prescription drug coverage; 6:30-8:30 p.m., Lawrence Public Library Auditorium, 707 Vt., 218-1358.
Immunization clinic by the Lawrence-Douglas County Health Department (no flu shots), 8:30 a.m.-11:30 a.m. and 1 p.m.-4:30 p.m., 200 Maine, 843-0721.
Health screenings for people 60 and older by Lawrence-Douglas County Health Department, 9 a.m.-11 a.m., Babcock Place, 1700 Mass.