Later on, in the 1930 ’ s and 1940 ’ s, the Witnesses became known for their house - to - house preaching with portable phonographs, using recordings of Bible talks presented by J. F.
Hiljem, 1930 - ndatel ja 1940 - ndatel aastatel said Jehoova tunnistajad tuntuks selle poolest, et nad kuulutasid majast majja, kandes kaasas grammofone ning heliplaate piibliliste kõnedega ühingu teise presidendi Joseph F.