HI:
Speaking of Denver Holt, here's a Snowy Owl book co-authored by him:

http://www.amazon.com/Snowy-Owls-Who-Are-They/dp/0878425438/ref=sr_1_3?s=books&ie=UTF8&qid=1321752226&sr=1-3

sincerely
--

Ian Paulsen
Bainbridge Island, WA, USA
Visit my BIRDBOOKER REPORT blog here:
http://birdbookerreport.blogspot.com/