Find out where to get them all in your favorite formats at
http://www.phrasethesaurus.com/
PS: If you would like to access these books but are low on funds, ask your local reference book librarian to purchase them so that you can refer to them for free. Just ask them to request one or all of these books in print by ISBN number. Vol. 1 ISBN # 978-0-9729372-8-3 , Vol. 2 ISBN # 978-09729372-9-0, Vol. 3 ISBN# 978-0-9891572-0-9, and Vol. 4 ISBN# 978-0-9891572-1-6. The ebooks are also available for libraries to purchase for your access on OverDrive.com.