All that can presently (March 2022) be gleaned about Nellie Beaumont
from sheet music covers and by Internet searching is that she has been featured on 3 works published between 1905 and 1912.
She is presumably an American singer and actress. Her portrait is taken from the cover of Everybody Two-Step - Song
(1912) music by Wallie Herzer
, words by Earle C. Jones and published by Jerome H. Remick & Co.
, New York & Detroit, USA. The cover also tells us that she sang this song in A Lucky Hoodoo
Surfers are welcome to contribute any further information about this performer.