Same person as #48, only much older-probably a friend of Mary Hyndman.
"Rosa Moore:The only one by this name I can find was a daughter of Joseph C. & Elizabeth J. Moore of Upper Chunk. She died in 1938 at age 88 years and was never married. This Moore family lived in Upper Chunk among the Scotch-Irish families, but there doesn't seem to be a close connection. Joseph was born in Pa. in 1826, as were both his parents, according to the census entries. But it is also interesting to note that his next door neighbor was John & Selena (Bell) Moore, both natives of N. Ireland." (Jack Sterling)
This must be the same Rose Moore. If she died at 88 in 1938, her birth year was c. 1850. Mary Hyndman was born 14 Sep 1848 (who I assume was her friend for they appear to have been photographed at the same time with the same backdrop - photos #48 & #49). Bill Auld says that Rose was born in 1849 - in the Liberties (he thought) and was a school teacher by 1870. Upper Mauch Chunk makes more sense for that is where Mary Hyndman's parents had property. The Connellsville photographer of the older portrait [this portrait] is interesting. Connellsville is in the southwestern part of Pennsylvania. E. K. Hyndman (son of Hugh and Catherine Huff [Hoff] Hyndman and cousin of Mary Hyndman) had interest in a coke and iron company in Connellsville (along with John Leisenring). But as far as I know, E. K. lived in Pittsburgh. A book on Pennsylvania 19th century photographers states that photographer Byron Porter was active in 1890-91 in Connellsville, making her about 40 in this photo.