IMO, this is a fascinating idea for a thread! Vintage out-of-print guitar songbooks and manuals - with images. I have a few myself from the 60s/70s. No tab, of course (did that book really have tab?). Mostly piano reductions, or just vocal melody and chord symbols.
Josh White is a fairly well-known name to me from the time. I have an old EP of his. From the UK perspective, he was one of those post-Big Bill Broonzy players, like Brownie McGhee, a few of whom came over here in the late 50s and turned a whole lot of people on to folk-blues guitar. Not only Renbourn, of course, but all his contemporaries (Davy Graham, Bert Jansch, Alexis Korner, etc).
By the late 50s, White was more of a polished entertainer than most, which may have put off a few of the more "purist" blues fans, who wanted their music obscure, gritty and compromising.
I remember Ivor Mairants' guitar shop in London in the 60s - he was a teacher too, who published books and tuition records.
For those who don't know Josh White:
https://www.youtube.com/watch?v=edW5UHehwbA
https://www.youtube.com/watch?v=PnpRupxozes