Have you seen this thread?Please provide any additional help
https://www.backyardchickens.com/threads/graphic-pics-of-my-day-learning-to-caponize.675898/
This post has a bunch of links, but it's old so they may or may not work:
Capon Articles
Agriculture experiment station: Capon Production
http://www.ksre.ksu.edu/pr_histpubs/pubs/SB274.pdf
Meat quality of capons (Japanese capons )
http://www.jstage.jst.go.jp/article/jpsa/46/4/345/_pdf
Capon growth performance (abstract only)
http://poultsci.highwire.org/cgi/content/abstract/89/7/1481
Capon and slips meat quality
http://ps.fass.org/cgi/content/full/88/7/1466
Pheasant capons (and gonad re-growth)
http://www.vef.hr/vetarhiv/papers/2006-76-7-24.pdf
Feeding capons
http://www.vitaplus.com/pdf/Capon Production.pdf
Capons and effect of testosterone on hepatic lipids
http://ps.fass.org/cgi/reprint/88/5/1033
Poultry Meat Industry: Capons
http://en.engormix.com/MA-poultry-industry/articles/poultry-meat-industry-capons-t1015/p0.htm
Capons and broodiness (pg 319)
http://books.google.com/books?id=F7sUAAAAYAAJ&lpg=PA319&ots=cLZw4nY-UT&dq=NOTE ON THE BEHAVIOR OF CAPONS WHEN BROODING CHICKS&pg=PA319#v=onepage&q&f=false
Bangladesh capons (chemical vs. surgical methods)
http://docsdrive.com/pdfs/ansinet/ijps/2004/284-286.pdf
Books on caponizing
Whats a Capon and Why
http://openlibrary.org/books/OL6539951M/What's_a_capon_and_why
http://www.archive.org/stream/whatscaponwhy00beuo#page/n3/mode/2up
Sears Easy On
http://www.afn.org/~poultry/capon.htm
Market Poultry (part 2)
http://books.google.com/books?id=VxlWAAAAMAAJ&lpg=RA12-PA1&ots=ldaXLx6UlV&dq=MARKET POULTRY(PART 2)PRODUCTION OF MARKET POULTRY(Cont1nued)PRODUCTION OF CAPONS AND POULARD8&pg=RA12-PA1#v=onepage&q&f=false
Success with poultry (pg 77)
http://books.google.com/books?id=lxlDAAAAYAAJ&dq=success with poultry&pg=PA76#v=onepage&q&f=false
Capons for profit
http://books.google.com/books?id=jlRHAAAAMAAJ&ots=apHiRUYxnP&dq=capons for profit&pg=PA10#v=onepage&q&f=false
Capons and Caponizing
http://books.google.com/books?id=pzJFAAAAYAAJ&dq=caponis and caponizing&pg=PP1#v=onepage&q&f=false