Tony read these:
The Great Camaro by Michael Lamm
Camaro! Chevy's Classy Chassis by Ray Miller
Catalog of Camaro ID Numbers 1967-93 by Cars and Parts magazine
Camaro! from Challenger to Champion by Gary Witzenburg
The Genuine Camaro White Book 67-85
Camaro by Richard Langworth
The Definitive 1969 Camaro Z/28-SS396 Fact Book by Jerry MacNeish
1969 Camaro Factory Assembly Manual
Camaro Untold Secrets 67-69 by Wayne Guinn
The 1969 Camaro Reference Book by John Hooper
they are not all perfect, (but together they are), and if you are writing a book about Camaro's, your personal library should have the above books.