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By Andrew Misseldine

Africk, Henry. *Elementary College Geometry*. CUNY Academic Works, 2013. https://academicworks.cuny.edu/ny_oers/6

Bard, Gregory V. *Sage for Undergraduates*. American Mathematical Society, 2015. http://www.gregorybard.com/books (CH, Nov’15, 53-1319).

Beck, Matthias, et al. *A First Course in Complex Analysis. *2017. http://math.sfsu.edu/beck/complex.html

Beezer, Robert A. *A First Course in Linear Algebra.* Congruent Press, 2015. http://linear.ups.edu

Boelkins, Matthew, David Austin, and Steven Schlicker. *Active Calculus*. 2017. https://activecalculus.org

Bogart, Kenneth P*. Combinatorics through Guided Discovery.* 2017. https://bogart.openmathbooks.org

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Guichard, David*.** Community Calculus*. 2017. https://communitycalculus.org

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Hitchman, Michael P. *Geometry with an Introduction to Cosmic Topology*. 2018. [Originally published by Jones and Bartlett, 2009.] http://mphitchman.com

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Leary, Christopher C., and Lars Kristiansen. *A Friendly Introduction to Mathematical Logic.* 2nd ed. SUNY Geneseo, 2015. https://minerva.geneseo.edu/a-friendly-introduction-to-mathematical-logic

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__________. *Notes on Diffy Qs: Differential Equations for Engineers*. 2018. http://www.jirka.org/diffyqs

Levin, Oscar. *Discrete Mathematics: An Open Introduction*. 2nd ed., 2017. http://discrete.openmathbooks.org/home.php

Lippman, David, and Melonie Rasmussen. *Precalculus: An Investigation of Functions*. 2nd ed., 2017. http://www.opentextbookstore.com/precalc

Lippman, David. *Math in Society*. Washington State Community Colleges, 2017. http://www.opentextbookstore.com/mathinsociety/index.html

MERLOT. California State University. https://www.merlot.org (CH, May’14, 51-4799)

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Stein, William. *Elementary Number Theory: Primes, Congruences, and Secrets*. Updated ed., 2017. 1st ed., Springer-Verlag, 2008. https://wstein.org/ent (CH, Oct’09, 47-0925).

Stitz, Carl and Jeff Zeager. *College Algebra*. 2013. http://www.stitz-zeager.com

Sundstrom, Ted. *Mathematical Reasoning: Writing and Proof*. Grand Valley State University, 2014. https://www.tedsundstrom.com/mathreasoning [Originally published by Prentice Hall, 2002]. (CH, May’03, 40-5255)

Thomson, Brian S., Judith B. Bruckner, and Andrew M. Bruckner. *Elementary Real Analysis. *2nd ed, 2008. [Originally published by Prentice Hall, 2001.] http://www.classicalrealanalysis.info/com/Elementary-Real-Analysis.php

Treil, Sergei. *Linear Algebra Done Wrong*. 2017. https://www.math.brown.edu/~treil/papers/LADW

Trench, William F. *Elementary Differential Equations*. Trinity University Faculty Authored Books, 2013. [Originally published by Brooks/Cole, 2001.] https://digitalcommons.trinity.edu/mono/8

__________*. Introduction to Real Analysis*. Trinity University *Faculty Authored Books, 2013. *[Originally published by Prentice Hall, 2002.] https://digitalcommons.trinity.edu/mono/7

Wiggins, Stephen. *Ordinary Differential Equations*. 2017. https://figshare.com/articles/Ordinary_Differential_Equations/5311612

Yoshiwara, Katherine. *Modeling, Functions, and Graphs: Algebra for College Students*. 2018. https://yoshiwarabooks.org

Zakon, Elias. *Mathematical Analysis I*. The Trillia Group, 2004. http://www.trillia.com/zakon-analysisI.html