"Old-Fashioned" O-level Maths Book I'm looking for recommendations for an "old-fashioned" style of maths textbook for O-level/GCSE, i.e., one which is concise (not full of pictures) with plenty of exercises. Ideally something which is available in PDF format online. I don't necessarily mean an old book, more a book written in a style which is typical of the early 20th century or earlier. (For instance, Gwynne's Latin is a modern book for learning Latin which I would consider to fall under this category.)
I am quite fond of this one which I own a physical copy of, but am struggling to find anywhere online in PDF format.
Also I would appreciate if it is just one book rather than many volumes. A lot of maths textbooks made for school come in many volumes with titles like "School Maths 1A, 1B, 2A, 2B", etc.

To clarify, by "O-level/GCSE", I mean a book with a table of contents which should at least tackle all of the following:

 A: I would recommend something like this. It's not specifically for O Level's or GCSE's but I've found it to be an excellent textbook.
Alternatively, if you are just looking for the facts and how to use the facts (so without any, or with very few proofs) then I can recommend the CGP GCSE Maths study guides. They are extremely cheap and extremely good, complete with plenty of examples and exercises.
You can also buy a CGP GCSE Maths questions book that is meant as a companion to the main study guide; it contains hundreds of questions, and is once more also very cheap. The links are below:
https://www.cgpbooks.co.uk/secondary-books/gcse/maths/mxhr47-new-2021-gcse-maths-edexcel-revision-guide
https://www.cgpbooks.co.uk/secondary-books/gcse/maths/mxhq42-gcse-maths-edexcel-exam-practice-workbook-h
They also have an option of an all-in one maths GCSE book, complete with practice as well:
https://www.cgpbooks.co.uk/secondary-books/gcse/maths/mxhs44-new-2021-gcse-maths-edexcel-complete-revisi
Personally, I would go for the book that is linked directly above, as well as the practice exam workbook as a bonus; thay are what I used (mainly the all in one book) for my GCSE Maths and they served me very well.
A: For part 1 and 2--Higher algebra by hall and knight
For part 3-Coordinate geometry by sl looney
Well these were books which take from beginner level to advanced level of maths,(nothing off topic but deeper in the topics you mentioned). They being pretty concise (plenty of questions included). are ideal for someone who has the knack of solving problems. (I am sure you do :~)
I really do not know what level of difficulty you want, but the theory is really ideal for your description, even if some of the questions (especially from higher algebra) might be a little too difficult to crack for school students, in case you want it for teaching.  The questions are really fun to solve, but not intended for someone who is scared of difficult problems being thrown at him.
For part 4, here is the school textbook statistics
and probability, which is old fashioned in all but the language......
Since the curriculum varies slightly from place to place, it is indeed difficult to get every subtopic in one place........but youtube is always there.
Being widely popular books, I am sure that you will be able to find the solutions of all the books mentioned online too
You might want to check these out
disclaimer- I don't own the  copyrights :~)

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*New Syllabus Mathematics for O-Level 1

*New Syllabus Mathematics for O-Level 2
