A slideshow about and a signing of the book, "The Civil War in Pennsylvania: A Photographic History," is 1 p.m. April 20, Lehigh Valley Heritage Museum, 432 W. Walnut St., Allentown.
The book's editors have published extensively in the area of Civil War history.
Michael G. Kraus is Curator of Collections at Soldiers and Sailors Memorial Hall and Museum, Pittsburgh.
David M. Neville is publisher of Military Images magazine.
He and Kraus co-wrote the DVD documentary series, "Civil War Minutes."
Kenneth C. Turner is a writer and researcher for the Time-Life "Civil War" series.
The program is being held in conjunction with the museum's exhibit, "Abraham Lincoln's Journey to Greatness," continuing through summer.