Re: Letter about Gen. R. E. Lee
The captures are a very small part of the bigger article. The discussion is mostly in the section where the 30s footnotes fall (easiest reference since there are no page numbers in the online article). It mentions 50 Adams Co. blacks being sold in the south. The article in North & South is solely about this issue and I think it is adapted from the author's book, which is cited in the bibliography of the Gettysburg magazine article.