The Yardbirds' "Still I'm Sad"

About two years ago, I got a two-disc compilation album of the Yardbirds titled Smokestack Lightning.  I was very surprised to find that I already knew the song "Still I'm Sad."  The first forty seconds or so is used near the beginning of THX 1138 (George Lucas' 1967 student film, not the 1971 feature).  Recently, after listening to the album again, I figured out the notes, and this morning I finally got around to notating it.  Of course, as always, this comes with the disclaimer that I might be wrong:

There are four instrumental bars before this vocal phrase starts, and with some extra measures afterwards, it repeats throughout the song.