Intruders broke into a shop building last week in Wendber, Pennsylvania, and vandalized a private collection of streetcars.
The vandals sprayed graffiti on the walls of the former coal company building, smashed windows and lights on the streetcars, spray-painted seats, and damaged an automobile.
The collection is owned by Ed Metka, who has been collecting the streetcars and other artifacts since the 1980s.
He has provided parts from his collection to some operators of the vintage equipment.
Police reports indicated that the intruders caused more than $50,000 in damage.
Some of the streetcars dated to the early 1900s. Police said they are following a few leads in their investigation but urged anyone with information about the break-in to contact them.