Career
In his obituary, the Pittsburg Press called William Helis "one of the amazing figures of the American oilfields."
A resident and legal domicile of New Orleans, Louisiana, William Helis died in Johns Hopkins Hospital in Baltimore, Maryland. His remains were brought home to New Orleans where he was interred in the Metairie Cemetery. His mausoleum was built by American architect and sculptor, Albert Weiblen.
In 1991, William Helis was posthumously inducted into the Fair Grounds Racing Hall of Fame.