I bought this for one penny plus postage so what is not to like ? It takes specific books of hours, reproduces one or two pages from each, and provides a commentary on the owners - who, when, their lives - and the manuscript pages. Information on the latter includes some explanation of iconography, personal references etc. including information which is not readily accessible to the general reader. It also gives specific references to where manuscript currently is, approximate date, style, liturgical usage , szie etc.. which is very helpful when using this as an academic reference book. There is a handy chapter on nature, contents and use by owners of books of hours which is lucid and succinct. Some of what is here may have been superseded by later research but it remains a really useful book - and a bargain.