I grew up in St Louis, but can't remember Black Jack (will google it) but isn't it near Ferguson???
late 50's my parents studied and went to the Kinloch KH (morphed into the Florissant cong). Kinlock was a small city in the St Louis suburbs with an all black government. Not heard of anywhere in the USA in the late 50's. Kinlock borders Ferguson,
sorry to high jack, but nothing surprises me about that cult. (Crazy)