In 1932, the National Hotel Management Company(NMH) was created, with Hitz as the NHM president.

In the days before computers, Hitz maintained file cabinets with information on the preferences of thousands of guests.

A guest would need only to switch on the radio to learn about the evening's scheduled entertainment and the day's menus.

At the hotel dining rooms, Hitz hired a special chef (called a "Tony") to make café diablo and Crêpes Suzette, and to sell the treat for an affordable 50 cents.

Hitz became ill towards the end of 1939 due to a liver ailment and died of a heart attack at the Post Graduate Hospital in New York City on January 12, 1940, at the age of 48.

He was cremated and interred at Fresh Pond Crematory on Long Island, New York.