All that can presently (December 2022) be gleaned about Rose Felmar
from sheet music covers and by Internet searching is that she was presumably an American actress/singer who has been featured on just one work namely In the Land of Harmony
(1911) music by Ted Snyder
, words by Bert Kalmar and published by Ted Snyder Music Co.
, New York, USA
Her portrait on the left is taken from the same item.
Surfers are welcome to contribute any further information about this performer.