Bob,
Welcome to the forum! Always glad to see a man with experience in Huey joining the discussion. I second what Ray said about Your "Army gunships in Vietnam" - great reference. Say, would the book You are working on happen to be the collaboration with John Brennan on Vietnam helicopter nose art & nicknames? I've been noticing mr. Brennan's messages on forums/guestbooks of different Vietnam helicopter units' sites for a couple of years now. I can't wait for it to be published!!!
Like Ray said, a lot of very interesting topics relating Hueys have been debated over the years on this forum - including a lot of things that have been neglected/left out by authors of Huey/Vietnam helicopters related books. When You find time, I recommend taking a look at the "Unusual Vietnam Hueys" thread (lots of great stuff):
/forums/767176/ShowPost.aspx
Ray, I've been off the radar for a while, but I hope I'll find more time in the future and start posting again :)
Best wishes to You all,
Marko