The Brian Sisters: The Boogie Woogieman

1941 or 1942 is the year in which the Brian Sisters made the short Halloween film The Boogie Woogie Boogie Man, which they recorded with the Will Osborne Orchestra. They were obviously grown up at the time, even though dressed as children. At a wild guess they were aged around 14 (Gwen) to 18 (Betty) which would support this date. It is generally given as 1942.