It is important to promote other sites to allow people with disabilities useful information from around the U.S. and world-wide, here are some that I have come across that can be useful:
Ableroad (Washington State)
Access Travel (travel information from the US and around the globe)
Accessible NYC (New York City)
Accessibility (NYC travel resources)
Dashproject (New England)
DisabledTravelers Blog (Miami, Florida and general travel resources)
Wheelchair Jimmy (California)
Wheelchair Jimmy (Seattle)
Wheelchair Travel to Austin (Austin, Texas)
Wheelchair Traveling (world wide travel resources)
Wheeling Around Town (Oklahoma City)