The Illustrated Discography of Surf Music, 1961-65 (3rd Edition)
The Illustrated Discography of Hot Rod Music, 1961-65 (Co-written with
Stephen McParland)
Both of these discographies contain lots of Gary Usher info.
Although these two books are out of print, you might want to check the stacks
at your local library or used book store.
If you know of a book that contains information on the life and music of Gary Usher that should be listed here, please contact Ron Weekes.