Divided back era.
Picture is of an old railroad arch in Berkshire Hills, MA, as it was in 1849, used by Boston and Albany Railroad.
"The Boston and Albany Railroad (reporting mark B&A) was a railroad connecting Boston, Massachusetts to Albany, New York, later becoming part of the New York Central Railroad system, Conrail, and CSX Transportation."
"The Berkshires...are a highland region located in western Massachusetts and northwestern Connecticut in the United States. Generally, "Berkshires" may mean all of Berkshire County, Massachusetts and contiguous highlands of several immediately adjacent counties to the east. Highlands of northwest Connecticut may be seen as part of the Berkshires and sometimes called the Northwest Hills or Litchfield Hills. The segment of the Taconic Mountains in Massachusetts is often considered a part of the Berkshires, although they are geologically separate and are a comparatively narrow range along New York's eastern border. Also referred to as the Berkshire Highlands, Berkshire Hills, Berkshire Mountains, and Berkshire Plateau, the region enjoys a vibrant tourism industry based on music, arts, and recreation. Geologically, the mountains are a range of the Appalachian Mountains."
- https://en.wikipedia.org/wiki/Berkshires
This card was produced by the Union News Company.
"The Union News Company (1908–1969), headquartered in New York City, was a wholly-owned subsidiary of the American News Company and sold newspapers, magazines, postcards, and other printed items at newsstands in railroad stations and hotels. Their cards were published by different companies, including American News, New England News, Curt Teich, Robbins Brothers, and Valentine & Sons."
- https://www.doaks.org/research/library-archives/dumbarton-oaks-archives/collections/ephemera/names/union-news-company
There is text at the top of the picture on the front of the card which reads,