I have had two enquiries re this book, so will post the reply here, or most of it, anyway: "Extremely unlikely that Amazon or any other bookstore would have this book, as it was printed privately in 1907 and today is likely to make hens' teeth look more plentiful than grains of sand on the beach. However the copy that one Sean McLaughlin found and told me about was in the library of the Irish Genealogical Research Society in London. I haven't done any research with them myself, but I note that there is a two page article about them in the front of the 1958 Burke's Landed Gentry of Ireland, (ie they have been around for a long time and have accumulated some fairly rare material) and I note "the useful selection of books from the library now housed (by kind permission of the Committee of the Irish Club) at 82 Eaton Square, London, S.W.1, where meetings of the Society are held from time to time during the course of the year." That was in 1958, so whether they are still there I don't know. Actually, altaVista is a wonderful machine, and I just looked up the Society and here is their address, although they don't appear to be on the net themselves Irish Genealogical Research Society Library 82 Eaton Square London SW1W 9AJ England so I suggest I letter to them would open up a goldmine. Certainly the "Three Hundred Years in Inshowen" that I am working from, which was written in 1930 by Amy Young is a fantastic resource, and I am sure the Hart book will turn out to be likewise. But if you are talking about "beginning your research" there, you may not have another more easily available resource which probably includes, among other things, all the material that HT Hart worked from. Have you tried the PRONI (Public Records Office of Northern Ireland), at http://proni.nics.gov.uk/index.htm and more particularly http://proni.nics.gov.uk/records/private/hart.htm, which is described as "The Hart Papers (D/3077)". The summary reads: "The Hart papers consist of 6,500 documents, volumes and glass-plate negatives. The Hart family of Ballynagard, Londonderry, have lived on theLondonderry/Donegal border since the late sixteenth century, and the oldestoriginal document in the archive is dated 1607. However, the great bulk of thedocumentation - apart from the estate material - relates to comparativelyrecent members of the family: to General George Vaughan Hart of Kilderry,near Muff, Co. Donegal (d.1832), and to his fourth son but ultimate successor, another George Vaughan Hart (who inherited all the family property in 1850, and died in 1895)." Anyway, I'll let you read the rest yourself, there's lots there.Happy hunting, and if you find the hart book, I'd like to photocopy some of it but jst haven't got round to doing that yet. Charlie