Guthrie wrote over a thousand songs during his career. His more famous songs include "This Land Is Your Land", "Mail Myself To You", "This Train", "Bound For Glory", and "Hobo's Lullaby". One of his most famous albums was titled "Dust Bowl Ballads". He sang about the Great Depression, and the problems faced by farmers at the time of the Dust Bowl, when erosion and drought ruined millions of acres of farmland.