Paul Siebel wrote the song in E, which I think sounds better. Try and find his recording of it on the old Elektra album WOODSMOKE & ORANGES, on of the best recordings of the '60's. He had David Bromberg, Jeff Gutcheon, Richard Green, and many more great musicians backing him up. The chords Paul used;

E F# A B7 E E F# A B7 E A B7 E A B7 E A B7 C# F# B7 E F# A B7 E

Mark Ross