I was digging thru a massive single-drawer filing cabinet (looks bomb-proof, maybe atomic bomb proof) that came with the luthier's estate I purchased some years ago. Found many banjo catalogs from the 60s and 70s...and this little book dated 1963. Anyone familiar with it?
Returning to Make Your Own Spanish Guitar: you may be interested to know that the famous luthier John Gilbert, whose guitars were played by (among others) David Russell and David Tanenbaum, got his start with that book.