Hi Bud, I used to have a marvellous book from Air-Britain called The Camel File which listed every Camel built by serial number with a short description and any notable remarks. You may already know of the series, there was also an SE5 File, DH4 File, RNAS Serials etc.
Unfortunately I sold mine when I gave the hobby up and I'd dearly like to have them back now!
AN still sell some titles, may have this or try ebay?
HTH
S