The Keokuk Pirates were affiliated with the Pittsburgh Pirates in Class C baseball from 1947-1949. They were affiliated with the Pittsburgh Pirates. This design is part of our old school retro baseball tees inspired by the vintage and defunct Minor League Baseball teams of yesteryear. Printed on our super soft 100% airlume ring-spun & combed cotton long sleeve T-Shirt. Or upgrade to our Luxury 52/48 cotton/poly vintage heather edition for an even softer classic look. We print & ship all of our high quality graphic tees in the USA.