The Butler City Farmer's Market will be open from 8 a.m. to 1 p.m. Saturdays at 205 S. Chestnut St.

SLIPPERY ROCK — The Slippery Rock Heritage Association is selling “The Way We Were,” a compilation of oral histories from residents of northern Butler County telling stories of growing up in the good old days.For more information, visit slipperyrockheritageassociation.org or call 724-794-6970.

SLIPPERY ROCK — The 16th annual dinner for the Slippery Rock High School Alumni Association will begin with a 5:30 p.m. social hour followed by a 6:30 p.m. dinner June 16 at the Slippery Rock Middle School Cafeteria at 201 Kiester Road.Make reservations by June 10. Forms are online at www.slipperyrockhsalumni.com or by contacting Rosemary Gill McMurray at 724-794-8188.

First Baptist Christian School will have a prekindergarten open house from 6:30 to 8 p.m. May 29 for the 2012-2013 school year at 221 W. New Castle St.Those unable to attend can call the office at 724-287-1188 or e-mail fbcsbutler@zoominternet.net.

MARS — The Mars Public Library's Lego Club will meet from 4:30 to 5:30 p.m. June 6 at 107 Grand Ave.Call 724-625-9048 or visit marslibrary.org for more information.