Immunization clinic by Lawrence-Douglas County Health Department, 8:30 a.m.-11:30 a.m. and 1 p.m.-4:30 p.m., 200 Maine, 843-0721.
Benefit concert for GaDuGi SafeCenter, 4:30 p.m.-10 p.m., Watson Park, Seventh and Kentucky streets.
National Association of Letter Carriers food drive, postal customers can leave canned goods for collection.
Lawrence Farmers Market, 7 a.m.-11 a.m., 824 N.H.
Douglas County Special Olympics benefit golf tournament, 7:30 a.m. registration, Alvamar Golf and Country Club, 1800 Crossgate Drive, four-person scramble, $500 per team, $125 per person, 856-5204.
Fifth annual Nash Dash fundraiser, 5K fun run and 5K walk starts at 8 a.m., Lawrence Visitors Center, 402 N. Second St.
Monarch Watch Open House, with plant fundraiser, 8 a.m., Foley Building, 2021 Constant Ave., 864-4441.
Fundraiser: Spring Plant Sale, 9 a.m.-noon, for the Lawrence Free Methodist Church youths, 3001 Lawrence Ave.
Welcome Back to Tennis, a program for players or former players ages 50 and older, 9 a.m., First Serve, 5200 Clinton Parkway, sponsored by the U.S. Tennis Assn., 749-3200.
First-time homebuyers workshop, sponsored by Tenants to Homeowners, 9:30 a.m.-1 p.m., United Way Center, 2518 Ridge Court, 842-5494.
Ride the T for free to the helmet fair, www.lawrencetransit.org.
Helmet Fair, Lawrence-Douglas County Fire & Medical, 10 a.m.-noon, Haskell Indian Nations University campus.
Mother's Day Tea and Silent Auction, a benefit for Women's Transitional Care Services, 10:30 a.m., Pachamama's, 2621 Quail Creek Drive, $35 tickets at door.
Sertoma Barbecue Contest, 11 a.m.-2 p.m., Broken Arrow Park, 29th and Louisiana streets.
Douglas County Commission meeting, 8:30 a.m., county courthouse, 1100 Mass.
Immunization clinic by the Lawrence-Douglas County Health Department, 8:30 a.m.-11:30 a.m. and 1 p.m.-8 p.m., 200 Maine, 843-0721.
City committee to evaluate library proposals, 9 a.m., City Hall, Sixth and Massachusetts streets.
Medicare information, 10 a.m.-noon, studio of Lawrence Senior Center, 745 Vt., 842-0543.
Lawrence-Douglas County Health Department board meeting, 5:30 p.m., Community Health Facility's first-floor meeting room, 200 Maine.
Brook Creek Neighborhood Assn. meeting, 7 p.m., East Lawrence Recreation Center, 1245 E. 15th St.
Lecompton City Council meeting, 7 p.m., Lecompton City Hall, 327 Elmore St.
Downtown waterline information meeting, 8:30 a.m., City Hall, Sixth and Massachusetts streets.
Immunization clinic by Lawrence-Douglas County Health Department, 9:30 a.m.-11:30 a.m. and 1 p.m.-4:30 p.m., 200 Maine, 843-0721.
City budget hearings, 2 p.m. City Hall, Sixth and Massachusetts streets.
Lawrence Farmers Market, 4 p.m.-6 p.m., 1020 Vt.
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.