and i can see several of the others on secondhand sites (eg ABE books) for varying prices, but often not too expensive, if you don't need to deliver outside of the US.
If the chess one is any guide, they may have lost the explicit TutorText branding (and changed title slightly) if and when they moved to other publishers so best to search by author.
https://www.amazon.co.uk/CHESS-COMPLETE-SELF-TUTOR-Self-Tuto...
and i can see several of the others on secondhand sites (eg ABE books) for varying prices, but often not too expensive, if you don't need to deliver outside of the US.
If the chess one is any guide, they may have lost the explicit TutorText branding (and changed title slightly) if and when they moved to other publishers so best to search by author.