From StarWars.com:
Fans and collectors of vintage images should check out Official Pix, who has added over 200 rare black and white photos, mostly from A New Hope and The Empire Strikes Back; including many rarely seen or even never-before-published images. Official Pix now offers three standard photograph sizes: 8x10, 11x14, and 16x20 (previously only 8x10s were available), and, they're also offering a 30% discount on all photos until November 14.