Beginning in 1936, the convention public talk was advertised by orderly parades of Witnesses who wore placards and distributed handbills. (Those placards were initially referred to as “sandwich signs” because they were worn one in front and one in back.) At times, a thousand or more Witnesses participated in such parades at a given convention.

[Pictures on page 265]

For many years field service was a prominent part of every convention.

Los Angeles, U.S.A., 1939 (bottom);