Have you tried Facebook? If he's got a page you can message him. I've used this method in the past to find authors for the ARSC Awards. In fact, it's the reason I signed up for Facebook in the first place!
From: Association for Recorded Sound Discussion List <[log in to unmask]> on behalf of Farrington, Jim <[log in to unmask]>
Sent: Tuesday, January 10, 2017 10:37 AM
To: [log in to unmask]
Subject: [ARSCLIST] Bruce Hanson, anyone?
Does anyone have contact information for Bruce K. Hanson? He's written a couple of books about Peter Pan, and most recently a self-published book, For the Record: Confessions of a Vinyl Soundtrack Junkie.