All that can presently (July 2023) be gleaned about The Sisters Linden from sheet music covers and by Internet searching is that they were presumably American actress/singers who have been featured on 2 works published between 1883 and 1884.
Surfers are welcome to contribute any further information about these performers.
The peformer is featured on 2 sheet music/recording covers. It does not claim to be complete and represents only the number of items located.