Woody, being defunct, has few if any opinions. The "Nearly Complete collection of Woody Guthrie Folk Songs", Ludlow Music, Inc., carries the following notice:

Any arrangement or adaptation of the compositions in this book without the permission opf the copyright owner is an infringement of copyright. Note: Each individual song included in this book carries original copyright notice date and is regiostered in the U.S. Copyright Office, The Library of Congress, D.C. 20540. Therefore, no material may be reproduced in whole or part without infringement.

My experience has been that the hardest people to deal with, at least as far as obtaining permission for non-profit reproduction of songs, are the old leftists. The ttitude, exemplified by Lomax's copyrighting of ALL the material he collected, is This Song is MY Song (even though the tune for that song was lifted from the Carter Family's Rock of Ages.)