All that can presently (June 2019) be gleaned from sheet music covers and by internet searching is that Beaumont Sisters are the one-off composers of Youre Talking Rag Time (1899) published by T.B. Harms & Co., New York, USA.
Surfers are welcome to contribute information about this composer.
This list is arranged by composer and contains 2 songs sung by Beaumont Sisters who is featured on sheet music covers.
It does not claim to be complete and represents only the number of items located.