SOCIETY SPEAKER: The Boardman Historical Society will start its fall schedule of speakers 10 a.m. Saturday at the Boardman Library. The speaker will be Bob Mastriana of 4M Architects, a firm that specializes in architectural design and historic preservation. He will talk on “The Architecture of the Western Reserve.”

Mastriana is a graduate of Boardman High School and the Kent State University School of Architecture. He also studied in Florence, Italy. Some of the many projects he has worked on include the Mahoning County Courthouse, the Mercer County Courthouse, the Poland Library and the Poland Clock Tower.

The Boardman Historical Society meets 10 a.m. the second Saturday of each month, September through May, at the Boardman Library for a lecture on some aspect of local history. Visitors, new members and guests are welcome.

TOURS OF UNDERGROUND RAILROAD: The Salem Historical Society offers the next Underground Railroad tour 1 p.m. Saturday. While dressed as a Salem Quaker, the docent takes passengers back in time to the late 1850s.

Since the homes are private and entrance not possible, flashed on a screen inside the trolley will be slides to show pictures of the inside of the homes; Underground Railroad hiding places and several abolitionists who lived in or visited them. The slides will also help clarify the historical information presented during the program.

Cost is $15. A second tour will be offered at 2:30 p.m. if the 1 p.m. tour is full. Call the reservation number, 330-337-6733, to schedule.

Anyone interested in scheduling a private tour should contact the office at 330-337-8514 for details.

TOLBERT TO SPEAK: Niles Historical Society volunteer Ralph Tolbert will present a program entitled “How Urban Renewal Changed Niles Forever” at 7 p.m. Monday in the Westenfield Room on the grounds of the Ward-Thomas House, 503 Brown St., Niles.

Historical photographs from the Niles Historical Society’s collection showing changes in downtown Niles from 1930 to 1976 will be viewed.

Tolbert maintains the society’s website, www.nileshistoricalsociety.org, produces the society’s newsletter and posts on the Facebook site I Am So Niles. He has presented many programs featuring the history of Niles.

Donations will be accepted and historical books will be for sale.

SEMAN TO SPEAK: The William Holmes McGuffey Historical Society will welcome Tim Seman, local historian and genealogist, at 10 a.m. Sept. 21 at Kravitz’s Deli Meeting Room, 3135 Belmont Ave., Liberty. Seman will present a program on the founding and development of the Youngstown and Mahoning County Library System.

Member admission is $5. Nonmember admission is $6. Refreshments will be served and a raffle held to benefit the society’s education mission. Instrumental music will be performed by Dolores DePietro.

Reservations are suggested. Walk-ins are admitted based upon seat availability.

SUNDAY SCIENCE: For the ninth year, OH WOW! The Roger & Gloria Jones Children’s Center for Science & Technology will spill out onto the streets for its annual Silly Science Sunday event, sponsored by Sweeney Chevrolet Buick GMC.

Each year, OH WOW!, 11 W. Federal St., Youngstown, invites exhibitors from the area to set up hands-on displays for explorers to learn about the STEM activities happening in the area.

The WOW! Pals in the facilities department have constructed a two-lane, 1,000-foot Hot Wheels race track with a 4-foot loop. Explorers will be able to take their own cars or use one the center will provide.

Anyone who would like to donate Hot Wheels cars to the project can call the center at 330-744-5914.

The event is free.