The correspondence of Cardinal Richelieu was last compiled in the 19th century. That collection is acknowledged as incomplete and biased; underrepresented are letters from aristocratic women whose influence over events might not be fully understood. To remedy this, I have visited archives in Europe and the US to identify and photograph letters to and from Richelieu that were not included in the Avenel compilation. I have begun to transcribe, TEI-encode, and publish these letters in a digital archive, and will upload the teiHeader metadata to correspSearch, making this valuable historical information more accessible and compatible with modern research methods.