They later ran the Helen and Kurt Wolff Books imprint at Harcourt Brace Jovanovich .
In the U.S. , he and Helen founded Pantheon Books in 1942 , which became famous .
Pantheon Books later ran the Helen and Kurt Wolff Books imprint at Harcourt Brace Jovanovich .
In the U.S. , he and Helen founded Pantheon Books in 1942 , which became famous .