To be fair to Woody Guthrie, he referred to "Bound for Glory" as "my novel". It has a few stretchers in it and it has generally been regarded as a fictionalised account of his life.
Billie Holiday's book, which if I recall rightly, does not even give her real name (Elanor Fagan Gough). There is an article here about the difficulty of writing about her here
. "Lady Sings The Blues" was almost certainly ghost written. It was a very interesting - and at times harrowing read. It is not auathoritative though.