The San Francisco Wasps were a former independent minor league baseball team based in San Francisco, California. They were established in 1901 and played in the California League. This design is part of our old school retro baseball tees inspired by the vintage and now defunct Minor League Baseball teams of yesteryear. Printed on our super soft ring-spun & combed cotton unisex T-Shirt. Or upgrade to our Luxury vintage heather edition (cotton/poly blend) for an even softer, more durable, classic look. We print & ship all of our high quality graphic tees in the USA.