The Food of the Gods (1976) / At the Earth's Core (1976) - Newspaper Ad

Oakland Tribune - September 22, 1976

American International Pictures made another admirable and exploitative money grab by re-releasing its biggest moneymaker of 1976 (The Food of the Gods) on a double-bill with another feature that made them some blessed coin (At the Earth's Core).

This is quite the double-bill, I think. Seeing as how the authors of the films respective source materials were contemporaries, it is also kind of perfect. 

Wells' The Food of the Gods and How It Came to Earth was first published in 1904, while Burrough's At the Earth's Core was first serialized in All-Story Weekly in 1914 and later published as a novel in July of 1922.

The success of both films resulted in a slew of low-to-mid-budget film adaptations of other titles by Wells and Burroughs being made and released throughout the late 1970s and very early 1980s. Good times, fun stuff.