A friend pointed me to this site last night. It’s got high-res scanned images of various vintage catalogs from Gibson, Martin, Epiphone, Bacon & Day, A. C. Fairbanks, and many others.
I’ve only started reviewing them, but WOW! 
Nice! Thank you.
Wow. I’m looking at Gibson’s 1909 Catalog and
some of those mandos were just over $100. I
wonder how exorbitant that was at the time.
I read the title as “Catalogs of Vintage Stringed Instruments” rather than “Vintage Catalogs of Stringed Instruments.”
If you had bought it then, you could have owned it for exactly $1 per year.
Now where did I leave that old flux capacitor? 
Cool! I found my 1966 Guild F-30 in there… $159!!