Warner Carr 

Born 31 December 1892
Lafayette, Tippecanoe, Indiana, United States

Died 16 October 1972
Milwaukee, Milwaukee, Wisconsin, United States

Warner Carr was a commercial artist that 
illustrated mostly children's books.

There is not any other information available on the internet.
I did some research and found that he married Lura M. Slaughter on December 6, 1919 and together they had two children:
Robert G. Carr (1921-1969)
Jane Frost Carr (1922-2005)


Carr signatures from Billy Robin and His Neighbors