For those who want to know the title without having to examine a PDF: Calculus Made Easy by Silvanus Phillips Thompson http://www.gutenberg.org/ebooks/33283 h

For those who want to know the title without having to examine a PDF: Calculus Made Easy by Silvanus Phillips Thompson http://www.gutenberg.org/ebooks/33283 http://www.gutenberg.org/ebooks/33283 P.S. Gave you an upvote. Just would have preferred to know the title / have a pointer to a non-PDF reference since one was available.