The picture above, is the back of the full color instruction sheets

I have a great link for you. A page with scans of the original artwork for the first series instruction sheets.

Here is a page with some of my thoughts on the instruction sheet variations.

Armored Dinosaur : Aurora (b/w) - Monogram '79 - Revell 93 - Revell-Germany - Revell 07

Cave : Aurora (color) - Aurora (b/w) - Aurora (pink) - Aurora (blue)

Cave Bear : Aurora (b/w) - Aurora (Canadian) - Aurora (European) - Aurora (pink)

Cromagnon Man : Aurora (color) - Aurora (b/w) - Aurora (blue) - Aurora (pink)

Cromagnon Woman : Aurora (color) - Aurora (b/w) - Aurora (blue) - Aurora (pink)

Flying Reptile : Aurora (color) - Aurora (b/w) - Aurora (pink) - Aurora (blue) - Monogram 87 - Revell 93 - Skilcraft - Revell-Germany - Revell 07

Giant Bird : Aurora (b/w) - Aurora (Canadian)

Jungle Swamp : Aurora (b/w) - Aurora (Canadain) - Aurora (European)

Neanderthal Man : Aurora (color) - Aurora (b/w) - Aurora (pink) - Aurora (blue)

Sabertooth Tiger : Aurora (color) - Aurora (b/w) - Aurora (b/w large) - Aurora (blue)

Sailback Reptile : Aurora (b/w) - Monogram 79 - Monogram 87 - Revell-Germany - Revell 07

Spiked Dinosaur : Aurora (b/w) - Aurora (pink) - Monogram 79 - Monogram 87 - Revell-Germany - Revell 07

Tar Pit : Aurora (color) - Aurora (b/w) - Aurora (blue) - Aurora (pink)

Three Horned Dinosaur : Aurora (b/w) - Aurora (pink) - Aurora (Canadian) - Monogram 79 - Monogram 87 - Revell 93 - Revell-Germany - Revell 07

T-Rex : Aurora (b/w) - Monogram 79 - Monogram 87 - Revell '93 - Revell-Germany

Woolly Mammoth : Aurora (b/w) - Aurora (pink) - Monogram '79 - Monogram 87 - Revell-Germany - Revell 07

Coming soon: Pictures of the original artwork for the instructions for the 1971 kits.