Saints Preserved by Thomas J. Craughwell is a short book that has an alphabetical list of saints. In this work, self titled an encyclopedic work, the author gives a very short biography that contains no new information and the location(s) of the saint's relics and in some cases how they came too be there. The book is a light work and has no new insights, but then the title claims too be about the Holy Relics. In this work the main subject is only touched upon as an aside on the small biography of the saint. The books does not contain even and index which an book of this kind should have.
Mr. Craughwell does not make light of his subject and this may be a good book for someone who is not looking for full biography of the saints or where they may find any saints relics. For a set of books that one can read on the biography of saints I would suggest "Butler's Lives of the Saints" which contains (as of a couple centuries ago) over eighteen times the number of biographies than this book and is more in depth; though relics are not discussed. It is a shame too have wasted this opportunity for a reference too Holy Relics. The author could have included the Holy Relics chain of documented custody and present location(s) that would make an excellent four too five volume book in small font. If the font used in Mr. Craughwell's book is used it would probably fill twelve volumes or more.
Even the limited saints covered are not covered in their full entirety. I am right next too a Relic Chapel containing properly ecclesiastically documented first century Holy Relics through twentieth century Holy Relics of some of the most well known which are included in this book. He seemed too have missed these Holy Relics on saints he included in his book even though they are written about in various areas and the information is easily found in the public domain. I think this book, though missing location of some of the relics he actually covers and has a very limited number of saints covered, is a good rudimentary introduction as too saints and some Holy Relics locations; if known. Either the title needs some work or the author was rushed into publishing.