I just came across a bunch of blue prints of the 1968 Firebird. B platform style 84. I think that the hardtop Coupe. They says there from the fisher body plant. One is of the body side its about 6 foot long with a ton of dimensions of the body lines and the like. With it are some hand sketches of the body side. I have two holders about a inch and a half thick each filled with original design work like change reports and sketches of a bunch of different body parts with them are the blue prints that I guess are at different stages of development . I thought this stuff was really interesting but I couldn't find anything about it or like it online. So I thought someone here mite be able to answer some questions. Like is this kind of stuff collectable? is it worth anything? If it is worth something about how much is it worth? Any info would be greatly appreciated and thanks for reading