Hard Twisted by C. Joseph Greaves Bloomsbury, $25.00, 291 pages, ISBN 978-1-60819-855-9 It is an unfortunate truth that the folks who lived through the hard years of the Great Depression are dying off at a rapid pace.  Every day more and more of them, and their hard-won wisdom, are being lost to us.  You know who they are . . . the elderly ones who live as frugally as