2017 David Hirsch and Dan Van Haften AUTHOR'S VOICE® The Ultimate Guide to the Gettysburg Address
2016 Dan Van Haften seven minute interview on Public Radio.
2011 Dan Van Haften Chicago WGN Radio 720, "The Sunday Papers", book discussion with Rick Kogan.
2011 David Hirsch Speech at National Archives II (video).
2010 Virtual Book Signing™ at the Abraham Lincoln Book Shop (video).
The Structure of Reason's blog
Third Party Blogs:
Posted by "Mary" on Tom Ashbrook's blog:
"I read a terrific book this summer: Abraham Lincoln and the Structure of Reason. How he learned to organize his thoughts and produce his wonderful speeches and letters. Riding the Illinois legal circuit with Euclid in his saddlebag."
Purchase Structure of Reason books.