
All that can presently (July 2023) be gleaned about
The La-Cey Sisters from sheet music covers and by Internet searching is that they were presumably American actress/singers who have been featured on just one work namely
When the Maple Leaves Were Falling (1912) music by
Tell Taylor, and published by
Tell Taylor, Chicago, Illinois, USA
Their portrait on the left is taken from that same work.
Surfers are welcome to contribute any further information about these performers.