If you are looking for Pascal relics, I highly recommend searching through the Internet Archives maintained by Jason Scott. While I am 100% sure that the content he archives is 100% legal, I got in trouble for posting a link before. But I am quite sure most of you here know of Jason Scott and the Internet Archive, he has archived a lot of old text books, and books from the past. This is where I found copies of the original Turbo Pascal books I read as a child. So, depending on the current copyright status of this particular Pascal book, it might eventually end up in the Internet Archive along with the other relics of our computing past.
Personal, what'd I love to see is old original Apple and Turbo Pascal games and programs being open sourced by their original developers and published for everyone to see. It would be awesome to read through how these developers back in the 80s were able to create some rather amazing programs for the time, considering the memory and CPU of those old machines. Nowadays most developers don't give a rats butt on how much memory and CPU their programs take, as long as it works, they assume that everyone running their software has a super computer in their home... I personally still try to code with maximum efficiency. For example, if I want a smaller program size, and I know what I am trying to do doesn't require some advanced Pascal features, I refrain from using the Object Pascal classes, and just do it the old school way. Unlike most modern languages, Free Pascal actually gives the programmer the choice to use the OOP, or not. You can still code a program using traditional Turbo Pascal semantics in Free Pascal, if you choose. Free Pascal is great for both the retro hobby programmer, and the modern day OOP programmer.
I'm still holding out for an Apple ][ and Commodore 64 target machine in Free Pascal.
Also, depending on new you are to either programming or Pascal, any Pascal book should be an asset, as Pascal hasn't changed much in terms of the basic dialect and syntax. I am sure the book will be great in say teaching how to parse text, calculate scores, keep a player inventory in a very efficient manner, and text adventures and
MUDs aren't entirely dead. A lot of people still really enjoy these types of games, as it is more akin to reading a book, than playing a traditional video game and thus stimulates the mind and enforces creativity. A sentence in a text adventure can create millions of different visual images in the brain of different readers.
Each reader will perceive the sentence differently.