Hello Frank.
Donald Green - 39 FS - unfortunately doesn't appear in the Aces-bio section or the 4-victory appendix section of your book Stars & Bars. I presume because he only scored/claimed 3 victories.
I don't supposed you'd like to tease us with some more details of his P-400 claims?
Regards,
...geoff
PS. If you ever make a searchable pdf version of your book available ....there will be a lot of forumites in factophile heaven.