A Field Guide to the Witness Trees of Culp's Hill: Featuring the Witness Trees of Spangler’s Spring, McAllister’s Woods, Spangler’s Meadow and Slocum Avenue (Peter Lukacs - GM) christianson His latest book

His latest book

During the final attack at Gettysburg

and contested memory in the everyday lives of late nineteenth-century Americans

"The New Civil War Handbook"

he mapped routes for his infantry and artillery on different roads to speed the journey and protect his command

A Field Guide to the Witness Trees of Culp's Hill: Featuring the Witness Trees of Spangler’s Spring, McAllister’s Woods, Spangler’s Meadow and Slocum Avenue (Peter Lukacs - GM) christianson His latest bookBook 2 of the Gettysburg Witness Tree Series Featuring the Witness Trees of Spangler's Spring, McAllister's Woods, Spangler's Meadow, and Slocum Avenue. Includes Bonus Section: The Lincoln Witness Trees of Baltimore Street