My mother's aunt is Frances Lusby Walz and, to the best of my knowledge, the only living member of the family you're looking for.I spoke with her a couple of weeks ago. She's 92 and gets things mixed up a bit but still seems to be pretty sharp. Here's a list of the family from various obit I have.
Robert & Lillian M
Children: Robert J. Albert H. Arnold J. Harvey A. Thomas H. Frances L. m. Ben Walz Lillian M. m. Archie Bell Miriam G. m. Albert Hendley Bettie m. James Darr