In gathering material for this handbook I have received valuable help from several friends, whose kindness calls for grateful recognition. My thanks are due, in the first place, to the Rev. W. F. G. Sandwith, Rector of St. Bartholomew-the-Great, and the lay custodians of the church, for the facilities which have allowed me to examine the building in all its parts, and for the readiness with which they have given information, not accessible elsewhere, on various points of its history and architecture. In this matter, besides more personal obligations, I feel that I owe much, in common with many others, to Mr. E. A. Webb,.