Sources and materials to work with on this article:
https://www.oklahoman.com/article/2062536/max-m-fagin
Emanuel was originally Orthodox, but joined the Orthodox movement in 1946 - p. 36
https://www.digitalprairie.ok.gov/digital/collection/culture/id/1731
https://www.jewishvirtuallibrary.org/oklahoma-jewish-history