Question: Who wrote the folk song recorded by an English rock band that released it's debut album in the United States on January 12, 1969?
Sentence (from "Led Zeppelin (album)"): Led Zeppelin is the eponymous debut studio album by English rock band Led Zeppelin, released on 12 January 1969 in the United States and on 31 March 1969 in the United Kingdom by Atlantic Records.
Relevant evidence: Yes