Advanced High-School Mathematics
by David B. Surowski, 2011, 435 pp, 3.1MB, PDF

Basic Concepts of Mathematics
by Elias Zakon, 2007, 208 pages, 1.5MB, PDF

Blast Into Math!
by Julie Rowlett, 2013, 215 pp, 7MB, PDF

Business Mathematics: A Textbook
by Edward I. Edgerton, Wallace E. Bartholomew, 1921, 331 pp, multiple formats

Cook-Book Of Mathematics
by Viatcheslav Vinogradov, 1999, 116 pages, 700KB, PDF

Discrete Mathematics for Computer Science
by Jean Gallier, 2008, 255 pp, 1.7MB, PDF

Encyclopedia of Mathematics
Kluwer Academic Publishers, 2002, online html

Engineering Mathematics 1
by Ian Craw, Stuart Dagger, John Pulham, 2003

Engineering Mathematics with Tables
by M.A. Keasey, G.A. Kline, D.A. McIlhatten, 1940

Engineering Mathematics: YouTube Workbook
by Christopher C. Tisdell, 2012, 114 pp, 2.7MB, PDF

Essential Engineering Mathematics
by Michael Batty, 2011, 149 pages, 4.4MB, PDF

Fundamental Concepts of Mathematics
by Farshid Hajir, 2005, 69 pages, 500KB, PDF

Further Mathematical Methods
by Niels Walet, 2002, 79 pages, 800KB, PDF

Galois Lectures
by J. Douglas, P. Franklin, C.J. Keyser, L. Infeld, 1941, 141 pp, multiple formats

A Gentle Introduction to the Art of Mathematics
by Joseph Fields, 2009, 428 pages, 1.5MB, PDF

H2 Mathematics Textbook
by Yan Min Choo, 2016, 1384 pp, 22MB, PDF

Handbook of Engineering Mathematics
by Walter E. Wynne, William Spraragen, 1916

The Handbook of Essential Mathematics
by John C. Sparks, 2006, 205 pages, 1.7MB, PDF

Handbook of Formulae and Physical Constants
by Power Engineering Training Systems, 2003, 43 pages, 0.6MB, PDF

Handbook of Mathematics for Engineers
by E. V. Huntington, L. A. Fischer, 1918

High School Mathematics Extensions
by Zhuo Jia Dai, Martin Warmer, Tom Lam, 2008, 250 pages, 1.5MB, PDF

Higher Mathematics for Engineers and Physicists
by Ivan S. Sokolnikoff, 1941

Higher Mathematics for Students of Chemistry and Physics
by Joseph William Mellor, 1902, 580 pp, multiple formats

How To Write Proofs
by Larry W. Cusick, 2009, online html

An Infinitely Large Napkin
by Evan Chen, 2016, 615 pp, 5.6MB, PDF

An Inquiry-Based Introduction to Proofs
by Jim Hefferon, 2013, 23 pp, 200KB, PDF

An Introduction to Contemporary Mathematics
by John Hutchinson, 2010, 295 pp, 7.3MB, PDF

Introduction To Finite Mathematics
by John G. Kemeny, J. Laurie Snell, and Gerald L. Thompson, 1974, PDF

An Introduction to Higher Mathematics
by Patrick Keef, David Guichard, Russ Gordon, 2010, 144 pp, 730KB, PDF

An Introduction to Mathematical Reasoning
by Peter J. Eccles, 2007, 364 pp, multiple PDF files

A Introduction to Proofs and the Mathematical Vernacular
by Martin Day, 2009, 123 pages, 1.5MB, PDF

Lecture Notes in Discrete Mathematics
by Marcel B. Finan, 2001, 224 pages, 1MB, PDF

Math Alive
by Ingrid Daubechies, Shannon Hughes, 2008, PDF

Mathematical Formula Handbook
by Wu-ting Tsai, 2012, 28 pp, 440KB, PDF

Mathematical Methods
by Mihir Sen, Joseph M. Powers, 2010, 432 pages, 3.8MB, PDF

Mathematical Methods for Physical Sciences II
by Christoph Kirsch, 2011, 209 pages, 2.7MB, PDF

Mathematical Reasoning: Writing and Proof
by Ted Sundstrom, 2013, 591 pp, 8.4MB, PDF

Mathematics for Computer Science
by Albert R Meyer, 2010, 520 pages, 4.8MB, PDF

Mathematics for Computer Science
by Eric Lehman, F Thomson Leighton, Albert R Meyer, 2010, 556 pages, 6.8MB, PDF

Mathematics for Computer Science
by Srini Devadas, Eric Lehman, 2005, PDF

Mathematics for Computer Science
by Tara Holm, 2009, PDF

Mathematics for Computer Scientists
by Gareth J. Janacek, Mark L. Close, 2008, 153 pages, 3.9MB, PDF

Mathematics For Engineering Students
by Samuel Keller, 1908

Mathematics for Materials Scientists and Engineers
by W. Craig Carter, 2005, PDF

Mathematics for Technical Schools
by J.M. Warren, W.H. Rutherford, 1921, 356 pp, multiple formats

Mathematics for the Physical Sciences
by Herbert S Wilf, 1962, 298 pages, 5.4MB, PDF

Mathematics Formulary
by Johan Wevers, 2008, 65 pages

by David H. Collingwood, K. David Prince, Matthew M. Conroy, 2011, 335 pp, 2.6MB, PDF

Proof in Mathematics: An Introduction
by James Franklin, Albert Daoud, 2011, 104 pp, multiple PDF files

Proofs in Mathematics
by Alexander Bogomolny, 2013, online html

Street-Fighting Mathematics
by Sanjoy Mahajan, 2008, 91 pages, 1.1MB, PDF

Unfolding the Labyrinth: Open Problems in Mathematics, Physics, Astrophysics, and Other Areas of Science by F. Smarandache, V. Christianto, Fu Yuhua, 2006, PDF