I still have not discovered where Joseph Carson's memorial on A.S.W.Rosenbach appeared. It was not printed in any of the Philadelphia or New York papers, and was not presented at any Philadelphia institutions or book clubs.
Likewise, I still have not identified the recipient of George Birkbeck Hill's letter. I can say, however, that the marginalia written in the accompanying books was not written by the hand of Robert Ernest Cowan.