If I have a piece of original Jefferson correspondence, can you authenticate it for me?

We are not in the business of authentication but, because of Jefferson’s amazingly detailed epistolary record of every letter he wrote and received, his Summary Journal of Letters (SJL), we can be fairly certain if Jefferson corresponded with an individual on a specific date.  We are happy to receive copies of Jefferson materials, especially those for which we have only a record entry of the correspondence. In return, we can provide whatever information about the document that we have. We believe, as do most manuscript dealers and collectors, that the publication of a previously unknown letter to or from Jefferson contributes to scholarship and enhances the value of the manuscript.