All that can presently (September 2022) be gleaned about
Mary Grace 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
Your Great Big Baby Smile (1916) music by
James White, words by
Will Rossiter (aka W. R. Williams) and published by
Will Rossiter, Chicago, Illinois, USA.
Her portrait on the left is taken fromthe above named work.
Surfers are welcome to contribute any further information about this performer.