<P> The Bicentennial Wagon Train Pilgrimage began a journey from Blaine, Washington on June 8, 1975 concluding at Valley Forge, Pennsylvania on July 4, 1976 . The wagon train pilgrimage traced the original covered wagon trade and transportation routes across the United States encompassing the Bozeman Trail, California Trail, Gila Trail, Great Wagon Road, Mormon Trail, Natchez Trace Trail, Old Post Road, Old Spanish Trail, Oregon Trail, Santa Fe Trail, and Wilderness Road . </P> <P> Related network television programs aired July 3--4, 1976 </P> <Ul> <Li> The Great American Celebration, 12 - hour syndicated entertainment program hosted by Ed McMahon and airing the night of July 3 </Li> <Li> The Inventing of America (NBC), two - hour BBC co-production reviewing 200 years of American technological innovations and their impact on the world, co-hosted by James Burke and Raymond Burr </Li> <Li> In Celebration of US (CBS), 16 - hour coverage hosted by Walter Cronkite </Li> <Li> The Glorious Fourth (NBC), 10 - hour coverage hosted by John Chancellor and David Brinkley </Li> <Li> The Great American Birthday Party (ABC), hosted by Harry Reasoner </Li> <Li> Happy Birthday, America (NBC), hosted by Paul Anka </Li> <Li> Bob Hope's Bicentennial Star - Spangled Spectacular (NBC) </Li> <Li> Best of the Fourth (NBC), recap with John Chancellor and David Brinkley </Li> <Li> July 4 satellite broadcast of the University of North Texas One O'Clock Lab Band live performance in Moscow (NBC), sponsored by the US Department of State </Li> <Li> Days of Liberty (WABC--New York), animated holiday special </Li> <Li> Goodbye America (PBS), mock "newscast" re-enacting a 1776 debate in the House of Commons concerning the future of the American colonies </Li> </Ul> <Li> The Great American Celebration, 12 - hour syndicated entertainment program hosted by Ed McMahon and airing the night of July 3 </Li>

What was a part of the bicentennial celebration of 1976 apex