Nest Box Characteristics for >3000 American Kestrel...Boise presentation

I have committed to building 100 kestrel boxes this year for a new study area in Southeast PA.  I plan to use Art Gingert's nestbox design.  I would like to read the Nest Box Characteristics study, or at least its conclusions/recommendations.  Would anyone know where I can access this info?  Suggestions are most welcome on nestbox design, installation, etc.  I am a newby.