11:30 a.m. to 12:15 p.m.: Old Fashioned Ice Cream Social; Updike Farmstead, 354 Quaker Road. Also from 1:15 to 2 p.m.
5 to 7 p.m.: Caring Kids in the Community opening reception; Updike Farmstead, 354 Quaker Road.
8 to 10:30 p.m.: Princeton Country Dancers Contra Dance with live music and no partner needed; Suzanne Patterson Center. Every Wednesday.
11 a.m. to 4 p.m.: The Princeton Farmers Market; Hinds Plaza, 55 Witherspoon Street.
6 to 8 p.m.: Young Professionals in Healthcare Speaker Series, Emerging Technologies in Healthcare with Bob Zivin; Double Tree Hotel, 4355 US Route 1.
6:30 to 8:30 p.m.: Arts Council of Princetons Summer Coutryard Concert Series with Ray Rodriguez y Swing Sabroso; Princeton Shopping Center.
7 p.m.: Lawrenceville Main Streets Music in the Park Concert Series with Borderline; Weeden Park, Route 206, Lawrenceville.
8 p.m.: The New Jersey Symphony Orchestra presents the Third Annual William and Judith Scheide Concert: Exploring Mendelssohn and the Gutenberg Bible; Richardson Auditorium, Princeton.
8 p.m.: Princeton Summer Theater presents Beyond Therapy; Hamilton Murray Theater, Princeton University Campus. Also Friday and Saturday at 8 p.m.; and Saturday and Sunday at 2 p.m.
9 a.m. to 12:30 p.m.: The Lawrenceville Farmers Market; 16 Gordon Avenue.
11 a.m.: The Historical Society of Princetons 2nd annual historical reenactment of 19th century baseball; Princeton High School junior varsity baseball field.
2 p.m.: American Opera Projects and Opera New Jersey reunite in The Family Room; The Berlind Theater, McCarter Theatre.
7 p.m.: Café Improv; Solley Theater.
8 p.m.: Broadways Christine Andreas comes to New Hope from La Cage Aux Folles for one performance; Bob Egans Cabaret Supper Club, Ramada of New Hope, 6426 Lower York Road, New Hope.
8:30 to 11:30 p.m.: Central Jersey Dance Societys No Name Dance; Unitarian Universalist Congregation, 50 Cherry Hill Road.
5 to 8 p.m.: Princeton Community Democratic Organization Picnic; Harrison Street Park, Princeton.
6 p.m.: Princeton Summer Theater celebrates its 43rd season with a Cabaret benefit concert and silent auction; Hamilton Murray Theater, Princeton University Campus.
10 to 11 a.m.: Butterfly House Tour; Buttinger Nature Center, 31 Titus Mill Road, Hopewell Township.
9:30 a.m. to 4:30 p.m.: Boy Scouts of America Environmental Science Merit Badge Workshop for Boy Scouts age 11 and older; Buttinger Nature Center, 31 Titus Mill Road, Hopewell Township.
11 a.m. to 4 p.m.: The Princeton Farmers Market; Hinds Plaza, 55 Witherspoon Street.
6 to 8 p.m.: Young Professionals in Healthcare July Happy Hour; Evelyns Outdoor Patio, 45 Easton Avenue, New Brunswick.
6 to 9 p.m.: Summer Exhibitions opening party; Princeton University Art Museum.
6:30 to 8:30 p.m.: Arts Council of Princetons Summer Courtyard Concert Series with Jerry Rifes Rhythm Kings; Princeton Shopping Center.
7 p.m.: Long Term Care Insurance Seminar; Lawrence Branch of the Mercer County Library System, 2751 Brunswick Pike, Lawrenceville.
7 p.m.: Lawrenceville Main Streets Music in the Park Summer Concert Series with The Tone Rangers; Weeden Park, Route 206.
8 p.m.: Princeton Summer Theater presents Beyond Therapy; Hamilton Murray Theater, Princeton University Campus. Also Friday and Saturday at 8 p.m.; and Saturday and Sunday at 2 p.m.
9 a.m. to 12:30 p.m.: The Lawrenceville Farmers Market; 16 Gordon Avenue.
8 to 10 p.m.: Nocturnal Insect Safari; Buttinger Nature Center, 31 Titus Mill Road, Hopewell Township.
9 a.m.: Second Annual New Hope Auto Show Road Rally; New Hope-Solebury High School parking lot.
10 to 11 a.m.: Butterfly House Tour; Buttinger Nature Center, 31 Titus Mill Road, Hopewell Township.
7:30 p.m.: The Compassionate Friends, Mercer Chapter, monthly meeting; Capital Health System of Hamilton, 1445 Whitehorse-Mercerville Road, Hamilton Township.
11:30 a.m. to 1 p.m.: The Ten Power Foods seminar; Princeton Windrows, 2000 Windrow Drive, Princeton. Free.
8 to 10:30 p.m.: Princeton Country Dancers Contra Dance with live music and no partner needed; Suzanne Patterson Center. Every Wednesday.
11 a.m. to 4 p.m.: The Princeton Farmers Market; Hinds Plaza, 55 Witherspoon Street.
7 p.m.: Lawrenceville Main Streets Music in the Park Concert Series with Reock & Roll Revue; Weeden Park, Route 206, Lawrenceville. Dinner at 6:30 p.m.
8 p.m.: Princeton Summer Theater presents A Dolls House; Hamilton Murray Theater, Princeton University Campus. Also Friday and Saturday at 8 p.m.; and Saturday and Sunday at 2 p.m.
9 a.m. to 12:30 p.m.: The Lawrenceville Farmers Market; 16 Gordon Avenue.
10 to 11 a.m.: Freezing, Canning, and Preserving Class; Terhune Orchards, 330 Cold Soil Road.
12:30 to 2:30 p.m.: Two-day Yoga for Multiple Sclerosis workshop; Princeton Center for Yoga & Health, 50 Vreeland Drive, Suite 506, Skillman. Also Sunday from 12:30 to 2:30 p.m.
3 p.m.: Burger Mania, Central NJs Largest Burger Cook-off!; 690 Old Trenton Road, West Windsor. Free.
8:30 to 11:30 p.m.: Central Jersey Dance Society presents Salsa Sensation dance; Suzanne Patterson Center, Monument Drive, Princeton.
4 to 7 p.m.: Zone 7 Dinners on the Farm; Blooming Glen Farm, Perkasie, Pa.
9:30 a.m. to 3:30 p.m.: Downtown Performing Arts Center of Lambertville camp session; 54 Mt. Airy Road, Lambertville. Through Friday, August 12.
10 to 11 a.m.: Butterfly House Tour; Buttinger Nature Center, 31 Titus Mill Road, Hopewell Township.
8 to 10:30 p.m.: Princeton Country Dancers Contra Dance with live music and no partner needed; Suzanne Patterson Center. Every Wednesday.
11 a.m. to 4 p.m.: The Princeton Farmers Market; Hinds Plaza, 55 Witherspoon Street.
6:45 to 8:45 p.m.: Greater Princeton Area Chapter of SCORE seminar, HR Means Higher Returns; Hamilton Township Free Public Library, 1 Justice Samuel A. Alito Jr Way.