Since you are on this website, you obviously are already well aware of the abundance of travel information available on the web.

One of the most useful sites I have found is the National Park Service's information website www.nps.gov, which has extensive information on all the parks. There is also a separate site to make campground reservations -- www.recreation.gov.

Information on the Canada National Parks can be found at www.parcscanada.gc.ca.