The Future of World Peace A Book of Charts Showing Facts Which Must Be Recognized in Future Plans for Peace; The Prospects for Peace by Roger Ward Babson Published 2015 by Sagwan Press ISBN-13: 978-1-296-92092-0, ISBN: 1-296-92092-5
Oklahoma Illustrated A Book of Practical Information, Showing the Territory's Present Status and FutureProspects. Her Great Resources, Climate, Size by Anonymous Paperback, Published 2012 by Nabu Press ISBN-13: 978-1-274-46642-6, ISBN: 1-274-46642-3
The Future of World Peace A Book of Charts Showing Facts Which Must Be Recognized in Future Plans for Peace; the Prospects for Peace by Roger Ward Babson Paperback, 180 Pages, Published 2010 by Nabu Press ISBN-13: 978-1-146-84156-6, ISBN: 1-146-84156-6