We still have a copy of that old Betty Crocker book too... and it still gets used on occassion.
I have my mother's Betty Crocker cookbook, from the late 1940s, before my time.
By the time it was my time, the book was already considerably splattered and the pages mixed up.
It is a three-ring sort of deal.
It's in the family archives; so as to preserve it better, in the late 1980s I took it apart, unbent any folds in the pages, and put the individual pages into plastic page-protectors, and stored the cover (minus the pages) flat.
Normally, I suppose, if one wishes an ancient Betty Crocker cookbook, one can find one at bookstores or antique stores, but my mother made significant hand-written notations on many of the pages, and that's what I try to preserve.
Oddly, I have no memories of my mother using it, but apparently she used it.
Once in a while--it's happened about half a dozen times the past five years--an ancient around here will give me an ancient cookbook, usually an old pamphlet of some sort, in decrepit condition, because my curiosity about food of yore is well-known.
The last time, I made oatmeal cookies using a recipe that had won the purple ribbon at the Keya Paha County Fair of 1906. It was difficult finding some of the ingredients (lard, baking soda, alcohol-laced vanilla), but I didn't want to substitute. I wanted to see what food actually tasted like back then.
It was okay, but it's cheaper and easier and quicker just to pick up a package of cookies at the grocery store.