Montgomery County, Pennsylvania, was once served by 140 miles of trolley lines. In the first half of the 20th century, a wide array of trolley cars rolled over Montgomery County’s rails, from quaint open streetcars rumbling through borough streets to sleek 80-mile-an-hour trolleys sailing across open fields in Upper Gwynedd and Hatfield Townships. The cars had zero emissions, and some lines were powered by renewable hydroelectric power. Taking the trolley was a convenient, affordable option for those travelling and commuting in Montgomery County, nearby Philadelphia, and points beyond. Freight was also carried on board trolleys, with prompt parcel delivery service. Fortunately, many years ago, dedicated trolley fans had the foresight to aim their cameras at these unique vehicles, providing rare glimpses not just of the trolleys but also of Montgomery County’s rapidly changing landscapes.

Mike Szilagyi's interest in trolleys was sparked at a young age by the sight of big green streamliners gliding down Old York Road near his grandmother's house in the Logan neighborhood of Philadelphia. Today, Szilagyi lives and works in Montgomery County, where he plans and designs bicycle paths and serves on the North Wales Historic Commission.

This volume's foreword was written by noted transit historian and longtime Montgomery County resident Andrew W. Maginnis.

In addition to detailed captions for each photograph, the book offers a brief history of transportation in Montgomery County, placing the trolley era in its historical context. The timeline of travel may be very generally summed up as: