I don't have all of Elsie's siblings information. In what I do have, I didn't find a E. L. Melius that could have been alive in the years you mentioned.
I have: Dorothy Doris Melius b Oct 28, 1919 in Seneca, Faulk, South Dakota, Durwood Keith Melius b Oct 9, 1927 in Ricyhvill,e O(tter Tail, Minnesota d Jan 18, 2000 in Laramie, Albany, Wyoming
Nothing on other siblings :: Arthur Robert Melius, Roger Dean Melius, Stella Marella Melius and Mae Maurice Melius.
Elsie Viola Melius was born Nov 10, 1921 in Cozad, Nebraska and d Mar 15, 1988 in Grand Rapids, Minn
Sorry I couldn't help you with E. L. Melius, !!!! Joan