NW Pitney ink Erin Go Baa St. Patrick's Day Greeting Card Message Inside the card reads: Erin Go Baa. Small theme related images are printed on the inside and back of the card, and on the envelope flap. Large 7 x 5 inch card made in USA, using high quality American made materials Card and matching envelope are packaged together in crystal clear cello sleeve. Fresh, colorful, creative design from NW Pitney Ink.