For nearly two decades, many believed this track was a traditional folk song with unknown origins.
Because Baez’s album lacked a writing credit, it was mistakenly labeled as a "traditional" song. Jimmy Page , hearing this version, assumed it was public domain and credited it as "Traditional, arr. by Jimmy Page" on Led Zeppelin's 1969 debut.
More than just a cover, the track was essential in defining the "Led Zeppelin sound" during their earliest days.