The white gorilla is the same suit used as the Mugato in A Private Little War (1968). However, the suit is without the spikes on its head and back as the Mugato. The suit also appeared, again without the spikes, as a Garboona - a cross between a gorilla and a baboon - in Lucy's Safari (1969). All three creatures were played by Janos Prohaska.
This episode takes place in the 1980s.