From
http://www.guardian.co.uk/film/2010/jun ... CMP=AFCYAH
Other films are important for documenting America in the early 20th century. The first film to be preserved from the collection, The Sergeant from 1910, was shot on location in Yosemite before the Californian wilderness had been turned into a national park, and features US army cavalry troops, who at that time were keeping order in the park.
See also
http://www.nytimes.com/2010/06/07/movie ... nt.html?hp
