Tap Roots
Made by Walter Wanger Productions and Universal Pictures , it was directed by George Marshall and produced by Walter Wanger from a screenplay by Alan Le May , based on the 1942 novel "Tap Roots" by James H . Street , with additional dialogue by Lionel Wiggam . 
<triplet> Tap Roots <subj> Universal Pictures <obj> distributed by <subj> George Marshall <obj> director <subj> Walter Wanger <obj> producer <subj> Alan Le May <obj> screenwriter