Three of the dialogues have appeared journals in 2002 and 2005 and have been somewhat altered.
A conversation on Frege and Mill
A conversation about the Peano axioms
Why axiomatize arithmetic?
A conversation about numbers and knowledge
A conversation of five
A conversation about numbers and existence.
Dialogues concerning natural numbers by Charles Sayward. ISBN 9781433107801. Published by Peter Lang in 2009. Publication and catalogue information, links to buy online and reader comments.