MIT has been one of the strongholds of Bitcoin for long. There is even a Bitcoin club in MIT.
http://bitcoin.mit.edu/about/
And the best thing about MIT is that many of the professors are also active supporters of the Bitcoin technology. For example, Professor Devavrat Shah has given many open
lectures about the advantages of Bitcoin. We need such supporters to counter negative propaganda against the crypto-currency.
MIT club is a little off these days but Yes it is true that they are one of the Strongholds of Bitcoin. Bitcoin needs more supporters like MIT guys. Although Nowadays people
are recognizing the value of Bitcoin and using it as a payment gateway in the businesses, it needs more customers to use it.
MIT is always innovative and a very jealous supporter of bitcoin. They have funded the work of three bitcoin developers with $900,000 the previous year http://www.coindesk.com/mit-seed-900k-bitcoin-developer-fund/. As far as it concerns bookstores which accept bitcoin I would like to add the British Columbia's Simon Fraser University (SFU) that its campus bookstore began to accept bitcoin payments from 26th May 2015. I wish and other bookstores especially the big online ones to accept bitcoins in payment options.