Here we go!
Lets start from the beginning:

1st Gen
Required reading: http://www.firstgencamaro.com/history.html

Clay Model of Project XP-836 which became the Camaro:

Rendering of Project XP-836, which became the Camaro:

1965 Chevrolet Panther clay model:

An early wagon proposal!:

Chevrolet Panther SS:

Chevrolet Chaparral:


1967 Firebird renderings:



2nd Gen
1970 Camaro proposals:

1970 Firebird renderings:


1970 Firebird front end proposal:


GM80
GM80 was a proposed FWD F-body replacement. It was cancelled in its final design phase.


GM80 Pontiac Firebird:


4nd Gen
Designers working on a new Camaro in 1987:

1988 Chevrolet Tomcat (bottom):

Early Firebird proposals:























4th gen Firebird mules:


Auto Bild April 1990 (showing an early 4th gen Camaro):


Road&Track May 1992:


1993 HotWheels Camaro ACC:




I have a bit more stuff, but its not scanned. Also, I know I skipped the 3rd gen, but I dont have anything good to share on the computer at this time.

Cool! Thanks for posting!