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.
Anti-Federalist Papers
The Anti-Federalist papers were written over a number of years and by a variety of authors who utilized pen names to remain anonymous, and debates over authorship continue to this day. Unlike the authors of "The Federalist Papers", a group of three men working closely together, the authors of the anti-Federalist papers were not engaged in an organized project. Thus, in contrast to the pro-Constitution advocates, there was no one book or collection of anti-Federalist Papers at the time. The essays were the product of a vast number of authors, working individually rather than as a group. Although there is no canonical list of anti-federalist authors, major authors include Cato (likely George Clinton), Brutus (likely Melancton Smith or Robert Yates or perhaps John Williams), Centinel (Samuel Bryan), and the Federal Farmer (either Melancton Smith, Richard Henry Lee, or Mercy Otis Warren). Works by Patrick Henry and a variety of others are often included as well.