Neils Sondergaard-working with dogs for deer.
John Jeanenny-tracking dogs for finding wounded deer.
William.G.Syrotuck-scent and the scenting dog.
Guy Wallace-the versatile gundog.Guy has a few books,each of them has the same passages out of the dogs for deer part.
If you can read/speak German,list is endless,those above are the best in English IMO.