Content description:
Down the right side of the poster is a vertical red bar with a black and white image of a primate screaming at the top. Down the left side is a vertical black bar. At the top left is "World / Laboratory / Animal / Liberation / Week / April / 23-29 / 1990" in black. At the bottom left is "it's time to end / the horrors." in red. At the bottom right is the In Defense of Animals logo, name, address and phone number in black.