LancasterHistory, 230 N. President Ave., Lancaster, has posted upcoming programs. To register, visit http://www.lancasterhistory.org or call 717-392-4633.

"The Archaeology of Northern Slavery," a part of the Regional History Colloquium, will take place on Thursday, June 15, with a reception at 5 p.m. and the presentation at 5:30 p.m. The lecture will also be livestreamed. Archaeologist and Millersville University professor James Delle will review and contextualize key archaeological sites whose excavations have deepened people's understanding of African American history and the relationship between slavery and freedom above the Mason-Dixon Line. Case studies discussed will include the Parker House in Christiana and the Thaddeus Stevens & Lydia Hamilton Smith Center in Lancaster. This program is free and open to the public. Registration is required for both in-person and virtual attendees.

Delle will also present "Archaeology at the Thaddeus Stevens & Lydia Hamilton Smith Historic Site," a Collections Up Close tour, on Saturday, June 17, at 2 p.m. Delle will discuss the digs at the Thaddeus Stevens & Lydia Hamilton Smith Center and talk about the artifacts found. Attendees will also be able to see the artifacts after the presentation. There is a fee, with discounts for seniors age 65 and up and students from age 11 through college. Admission is free for LancasterHistory members, but members should still register in advance. Capacity is limited.

LancasterHistory's Randy Harris will lead "Thaddeus Stevens' Lancaster City," a walking tour, on Monday, June 19, at 6 p.m. starting at Shreiner-Concord Cemetery, located at the corner of North Mulberry and West Chestnut streets in Lancaster. Harris will share what city life would have been like for lawyer, congressman, and abolitionist Thaddeus Stevens. The tour will last approximately 90 minutes. There is a fee, with discounts for students and LancasterHistory members. Space is limited.

Lancaster's People's Shakespeare Project will return to LancasterHistory to present "The Merry Wives of Windsor" at 6:30 p.m. daily from Tuesday to Monday, June 20 to 25, weather permitting. The production has been adapted and set in the mid-1950s. Performances are free, although a donation per person is requested. Attendees are welcome to bring chairs, blankets and picnics. Parking will be available on-site at LancasterHistory.

Two exhibitions are on display at LancasterHistory.

"Lancaster in the '60s" examines the issues of conflict, resolution, and protest in Lancaster County during the 1660s, 1760s, 1860s, and 1960s. The exhibition will close on Saturday, Sept. 16.

"A Sweet Start: Milton Hershey's Lancaster Connections" is a photograph exhibit highlighting Milton Hershey's personal and professional connections to Lancaster, where the entrepreneur grew up, established his first successful business and founded the Hershey Chocolate Company. The exhibition will close on Saturday, July 1.