Jeff - Since I don't have the 70's book, it's hard to compar with the 1997 edition. I received mine earlier this week, and it has 265 pages. Most of the images are black and white, but there are multiple color photographs distributed among the black and white illustrations.
Unfortunately, like many Schiffer books, there are very few photographs of the interior of the pieces that would be helpful to cabinetmakers, though the construction of many of the pieces could be surmised based on the area in which they were made.
If your edition doesn't have the color photographs, I'd recommend buying this book, as used copies are relatively inexpensive.
David