‘The Simpsons’ MLB hat collection has been a hit, making more designs and leagues likely

Two years in the making, the collection is nearly sold out and commanding high prices on the secondary market.
Sports Business Journal

New Era’s MLB ‘Simpsons’ collection sparks standout release for Lids

The 'The Simpsons'/MLB New Era collection featuring hats and apparel, including T-shirts, is the most popular and expansive ...