In January 1943, Probst wrote a seventh leaflet, which he gave to Hans Scholl. However, it was never distributed.
In September 1852, Webster returned to his Marshfield estate, where his health continued to decline due to cirrhosis and a subdural hematoma. He died in Marshfield, Massachusetts on October 24, 1852, at the age of 70, and is buried in Winslow Cemetery near his estate. His last words were, “I still live.”