The Brooke Grant series by Newt Gingrich consists of 3 books, published between 2015 and 2017. The series begins with Duplicity.
The Civil War/Gettysburg series by Newt Gingrich consists of 4 books, published between 2003 and 2011. The series begins with Gettysburg.
The Mayberry and Garrett series by Newt Gingrich consists of 2 books, published between 2019 and 2020. The series begins with Collusion.
The Pearl Harbor/Pacific War series by Newt Gingrich consists of 2 books, published between 2007 and 2008. The series begins with Pearl Harbor.
The Revolutionary War series by Newt Gingrich consists of 3 books, published between 2009 and 2012. The series begins with To Try Men's Souls.
The The Munk Debates series by Newt Gingrich consists of 20 books, published between 2010 and 2021. The series begins with The Munk Debates: Volume One (By: Rudyard Griffiths).