The Almanac Singers lasted for barely a year and only left behind three dozen songs, and their work was at least as controversial as it was popular. But they were among the very first folk music groups organized for political purposes to record, and their lineup -- Pete Seeger, Lee Hays, Woody Guthrie, and Millard Lampell -- was a virtual "who's who" of topical and popular folk music for the next 20 years. They were the group where Seeger first hooked up officially with Hays, as well as the first direct link in the careers of Seeger, Hays, and Guthrie, and their influence ling...