I wish you could find that calculus book again. I would love to have it!
I lent it to someone approximately 35 years ago and never got it back. It is not one of the texts by Thomas, Spivak, Kline or other well known authors of beginning calculus books. Some day I am going to find it again, but unfortunately great books especially on subjects that most of the public are not especially interested in do not always become popular. I will make another attempt and if I find it, I will let you know the title and author.
I recommend the Saxon Math books. Although you many not think you need it, it is best to start at the 4/5 level and work through each book until college level calculus and physics. I have done this and now I do calculus and physics problems for fun. It is far more engaging than Sudoku.