In an article in a recent San Francisco Chronicle, there was mention of this website:
http://www.
The Chronicle article says: “It’s worth a look, if only for some of the homey, casual approach to really helpful information.”
A copy of the 2008 book “Disabled Travelers Guide to the World” can be read online and/or downloaded at no charge. (From the home page, click on the blue book image on the left.)