Details are all that matters: God dwells there, and you never get to see Him if you don't struggle to get them right.
— Stephen Jay Gould

• I maintain a list of corrections to the third edition of Mathematical Methods in the Physical Sciences by Mary L. Boas (my deceased mother). In January 2016, I started a change log.
• I have started a list (incomplete) of errata in my papers.
• I taught from Functions of One Complex Variable I, second edition, by John B. Conway in Fall 2018, and I posted some comments and corrections.
• I taught from Complex Analysis by Theodore W. Gamelin in Fall 2017, and I posted some corrections.
• I taught from Complex Made Simple by David C. Ullrich in Fall 2014, and I posted some corrections.
• I taught from Elementary Topology by Michael C. Gemignani in Spring 2014, and I posted some corrections.
• I taught from the second edition of Schaum's Outline of Complex Variables in Spring 2012, and I posted some corrections.
• I taught from the second edition of Elementary Real Analysis by Brian S. Thomson, Judith B. Bruckner, and Andrew M. Bruckner in Spring 2011, and I posted some corrections.
• I taught from the fourth edition of Introduction to Analysis by William R. Wade in Spring 2010, and I posted some corrections.
• I taught from the second edition of Numbers, Groups & Codes by J. F. Humphreys and M. Y. Prest in Summer 2009, and I posted some corrections.