Your Favourite Third Party book?

[Jeff_Kearns]

"Algorithms for RPN Calculators", by John A. Ball.

Copyright 1978.

Although this book is not 'just' about HP calculators since it does mention the Novus Mathematician, Novus Scientist, and the Corvus 500, all of the examples pertain to some HP model like the HP-45. This book has a wealth of info (and RPN routines), especially on numerical integration methods, including the 3-point Gaussian Quadrature algorithm.

Jeff K