I have seen Knorr's pub. It is available at the Mary Washington College Library here in Fredericksburg. I have found errors in it, but it's a good source. I think it was based largely on the work of the church's own 1892 study of the cemetery and a 1940s look by Professor Carroll Quenzel (also of MWC) who wrote a history of the church. His work is out of print, but a copy is available (not for interlibrary loan) at the Central Rappahannock Regional Library in Fredericksburg. What none of them did was include a map which I have done. This helps as some of the stones are totally unrecognizable due to being 200 years old. Trip Wiggins Fredericksburg, VA