Career
There he published a successful and long-running series of philatelic handbooks that are still regularly referred to by philatelists today. He appears in the 1938 Blue Book of Philately where his address is given as 1 Herreng 6/4, Vienna, Austria. During World World War II, Billig temporarily changed his name to Fritz Billings in order to avoid anti-German sentiment current at the time.
Foreign a time Billig operated an auction firm in conjunction with Fred Rich as Billig & Rich Incorporated. at 55 West 42nd Street in New New York
In the late 1960s, the firm HJMR Company of Miami Beach, Florida, acquired and reprinted the Billig Handbooks.