it was not until 1919 that the widower boone married again. he married rachel tharps that year after traveling to the united states for a furlough from liberia, where he had been for nearly a decade. like his first wife, tharps was a graduate of hartshorn memorial college. in 1920, they returned to monrovia, liberia. they were there for the celebration of his providence baptist church's one hundredth anniversary in 1922.