This latest release from TheGenealogist adds the following searchable book records:
Armorial Families, Arms Authorized by The Laws of Heraldry 1863
Boyle’s court guide 1888
Burke’s Handbook to the Most Excellent Order of the British Empire 1921
Burke’s Landed Gentry Volume 1886
Debretts House of Commons and the Judicial Bench 1887
Encyclopedia of Heraldry or General Armory of England Scotland and Ireland 1844
Genealogica Bedfordienses Landed Gentry of Bedfordshire 1538-1700
Grantees of Arms to The End of The XVII Century
Herefordshire Visitation Of 1569
His Majesty the King 1910-1935
Imperial British Calendar 1823
Index Nominum to the Royalist Composition Papers
Kelly’s Handbook To The Titled Landed and Official Classes 1909
Landed Gentry of Bedfordshire 1538-1700
Miscellanea Genealogica et Heraldica – Third Series Vol IIIV
Miscellanea Genealogica et Heraldica – Third Series Vol IV
Miscellanea Genealogica et Heraldica Fourth Series Vol II 1908
Nottingham Visitation 1569 and 1614
Short View of the Peerage of Ireland 1759
Standing Council of the Baronetage Official Roll of the Baronets 1929
Suffolk Visitations of 1561 1577 1612
Sussex Visitations 1530 and 1633-4
The Pedigree Register for London 1907-1915
The Peerage of Ireland 1754
The Royal Kalendar 1786
The Royal Kalendar 1788
The Royal Kalendar 1796
The Royal Kalendar 1804
The Royal Kalendar 1820
Webster’s Royal Red Book Court and Fashionable Register January 1915
Worcestershire Visitation 1569
If you’re interested in this type of resource have a look at Guide to Selected Genealogical Reference Works.