The British Library is having an extensive exhibition on the Indian epic. The website has quite a number of manuscript images, guides, etc. An interesting podcast:
Neil Gaiman on the Ramayana (MP3, 45min, 18.3MB) Listen now
Neil Gaiman, author of the Sandman stories and many others, talks about his film treatment of Ramayana to Ravi Swami, animator, filmmaker and recent judge at the British Animation Awards.