Rounder has just completed the issuing of all Victor records between 1927 and 1941. I have them on cassette, but they are issued on CD. As far as I can tell there are some 100 or so additional recordings not including the radio broadcasts which were largely shortened versions of their records. Most of these other records were for ARC or Decca from 1938-40. 20 of ARC are found on Clinch Mt. Treasures from Country Records and 16 of Decca are on Country Music Hall of Fame: Carter Family from MCA. There is an album which is primarily gospel, but I don't know the name of it. I has quite a few duplicates of the Victor series. There are at least two On the Border Albums from Arhoolie which are the radio broadcasts and feature the children of the family. Of interest may also be an album from Bear Family Records of Sara and Maybelle Carter done in the early '60 with Sara's son Joe. Probably any good music store could order these. I would recommend the Victor series.