DONOVAN
In an interview with ZigZag in 1977 Jimmy said that he didn't play on "Hurdy Gurdy Man" but both Mickie Most ans Donovan said he did.
In fact in an interview Donovan did in 1992 with KCRW radio station in America he not only confirmed that Jimmy had played on this and other tracks but also he started Led Zeppelin himself at the 1968 sessions and also proclaimed in his ignorance that he had started heavy metal music with the same song.
It should also be noted that the single and album versions of "Sunshine Superman", both featuring Jimmy Page, are different.