If Jehovah wills, many of Jehovah’s witnesses in the United States, Canada and some other countries, will assemble at two eight-day conventions, Sunday to Sunday, that will commence in the early part of July 1969 in the eastern part of the United States.”
... It was mentioned that conventions would be held all the way across the United States to the Pacific and that, “we hope 300,000 to 400,000 persons will be in attendance at the six cities during these three weeks of 1969.”