Vintage Three Sisters Rocks Postcard from Ricketts Glen State Park 1960s For Sale

This vintage postcard features the striking Three Sisters Rocks formation located in Ricketts Glen State Park, Pennsylvania. The image captures the impressive natural rock arch with autumn foliage and a person standing at the base for scale, highlighting the grandeur of this unique geological feature. Printed in natural color, the postcard showcases mid-20th century photographic style and vibrant hues.Published by M. A. Cunningham in 1960, this postcard includes detailed descriptive text on the reverse, noting the location along the Bradley Pa. and Bradford Pa. route and the park\'s renowned scenic beauty and prehistoric significance. The card is postmarked 1971 and bears a 4-cent Eisenhower stamp, adding to its collectible charm. A perfect addition for collectors of nature, Pennsylvania landmarks, or vintage postcards.