The twentieth century has been called the age of documentation, and folklorists and other ethnographers have taken advantage of each succeeding technology, from Thomas Edison's wax-cylinder recording machine, invented in 1877, to the latest digital audio equipment, in order to record the voices and music of many regional, ethnic, and cultural groups, in the United States and around the world. Much of this priceless documentation has been assembled and preserved in the American Folklife Center's Archive of Folk Culture, which founding head Robert W. Gordon, in 1928, called "a national project with many workers." As we enter the twenty-first century the American Folklife Center is working on the critical issues of digital preservation, Web access, and archival management.