International Order for Gorillas is printed on Standard American and Classic Girl yellow t-shirts. They cost $21.95.
This is one of our favorite shirts. It is the shirt Val, "Chris Knight," wears while he's taking Dr. Hathaway's final. We have reproduced this shirt very carefully, and have spent many hours studying the font, the layout, and even the wrinkles on the gorilla's face all to ensure the most accurate reproduction of the "International Order for Gorillas" t-shirt.