The Friends of the Tanger Arboretum will offer "Historic Trees of Lancaster County: Part 2," a presentation by Len Eiserer, on Saturday, Nov. 4, at 11 a.m. The program will take place at LancasterHistory, 230 N. President Ave., Lancaster.

Attendees will learn about the historical connections between local trees and significant moments in history. Topics will include trees that witnessed the 1787 Constitutional Convention, those that played a role in the 1876 Centennial Exposition in Philadelphia, and those connected to Lancaster's 18th- and 19th-century silk industry.

Eiserer earned his bachelor's degree from the University of Maine and a doctorate in psychology from Bryn Mawr College. With 38 years of teaching experience, he currently teaches at HACC, Central Pennsylvania's Community College. Eiserer also maintains the website "Tree Treasures of Lancaster County" and serves on the board of the Friends of the Tanger Arboretum.

Tickets are free, but preregistration is recommended, as walk-in tickets are not guaranteed. Ticketholders are asked to check in at LancasterHistory's museum before proceeding to the auditorium in Ryder Hall.

To reserve tickets, visit http://www.lancasterhistory.org or call 717-392-4633. Children under 18 must be accompanied by a parent or guardian who is age 18 or older.