I'm not going to be any help, but I will say, Battle Mountain, Eureka, Fallon and Yerington. But also Milwaukee, Chicago, (a speakeasy casino) and just about every state and sometimes, small towns. For some reason the name was very popular. Harvard and in small town Texas. Little towns all over, seemed to have an Owl Club. Unless you can someday find the JM as any kind of connection, or something specific, this is one great mystery.