The book sells for $20 and the money goes to conserve the GA flags. You can order it from the GA Secretary of State's office in Atlanta.
There is one more ANV flag for the 16th Georgia - in the collections of the Augusta-Richmond County Museum in Augusta, GA. It is mis-identified as the 3rd GA flag. It came from the local UCV camp sometime after the war as have most of the flags in this museum. It was consistently identified as the 16th Georgia's flag in every account I have seen.
Greg Biggs