Original meaning
Originalists of all stripes cite "The Federalist Papers". It is fairly tenuous to suggest that this represents a good source for the original "intent": after all, Alexander Hamilton, who wrote the majority of those essays, was absent for the greater part of the Philadelphia Convention, and John Jay did not attend it at all. However, James Madison, the principal framer of the Constitution also wrote a substantial amount of "The Federalist Papers". Also, to suggest Hamilton and Jay's absence from the convention implies their ignorance as to the Constitution's original meaning is demeaning to those two men and inaccurate. The collected anti-Federalist papers, of course, will be no use at all to a person searching for the original "intent" of the framers. However, as evidence of how a reasonable person at the time would have understood the words of the Constitution, "The Federalist Papers" and the anti-Federalist essays are evidence of direct relevance.
Alfred Deakin
Deakin continued to write prolifically throughout his career. He was a member of the Eclectic Association, fellow members included authors Theodore Fink, Arthur Topp, Arthur Patchett Martin and David Mickle. Deakin wrote anonymous political commentaries for the London "Morning Post" even while he was Prime Minister. His account of the federation movement appeared as "The Federal Story" in 1944 and is a vital primary source for this history. His account of his career in Victorian politics in the 1880s was published as "The Crisis in Victorian Politics" in 1957. His collected journalism was published as "Federated Australia" in 1968.