For anyone researching the pedigrees of Greyhounds this book by Thomas Thacker might be of interest. An alphabetical return of the running at all the public coursing clubs in England, Ireland and Scotland, with the pedigrees (as far as received) of the dogs that won, and the dogs that ran up second for each prize. The first edition was published in 1842 for the season 1840-41, sequels followed for some more seasons.
Digitised versions of some of them are available at Google books, the originals can be obtained from time to time by online booksellers.
…lots about pedigrees and stud books