All that can presently (October 2023) be gleaned about
Emily Miles from sheet music covers and by Internet searching is that she was presumably an American actress/singer who has been featured on just 2 works published between 1919 and 1920. She sang both works in the Seventh Annual Revue,
The Passing Show of 1918
Her portrait on the left is taken from
Baby (1919) music by
Egbert A. van Alstyne, words by Gus Kahn and published by
Jerome H. Remick & Co., New York & Detroit, USA.
Surfers are welcome to contribute any further information about this performer.