I forgot to post this earlier, but about 10 years ago I bought a nice DVD showing the manufacturing facilities at the old Ava, MO Rawlings HOH plant. It even showed the ball plant in Turrialba, Costa Rica and the Adirondack bat plant.
The DVD is called "The Show & Tell Series". Basically a kids DVD that includes a series on News & Comics and Milk & Cookies, BUT I bought it purely for the Rawlings footage. Good video if you want to see the manufacturing process.
Matt