National Park Internships
http://www.nps.gov/personnel/

Military Recreation (Navy MWR)
http://www.mwr.navy.mil/mwrprgms/intern.html

Military Recreation (Army MWR)
http://www.armymwr.com/

American Hiking Society Internships
http://www.americanhiking.org/inside/jobs.html#sub1

Travel and Tourism Internships
http://www.ntfonline.org/NTFOnline/students/findinternships.htm

Resort Internships
http://internships-usa.com/resort02/res03orwy.htm

Resort Intern Connections
http://www.resortinternconnection.com/

American Hospitality Academy
http://americanhospitalityacademy.com/main.asp

The Washington Center Internships
http://www.ntfonline.org/NTFOnline/students/findinternships.htm