Found in 2 comments on Hacker News
ColinWright · 2011-07-28 · Original thread
"Calculus Made Easy" by Silvanus Thompson (updated by Martin Gardner).

http://www.amazon.com/Calculus-Made-Easy-Silvanus-Thompson/d...

(And you probably know this, but "Calculus" isn't the same as the "Lambda Calculus" - your comment makes it appear that you've confused or equated the two.)

steve19 · 2010-08-05 · Original thread
You can't have been looking very hard ;)

http://www.amazon.com/Calculus-Made-Easy-Silvanus-Thompson/d...

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