Cattleya M. Concepcion, Georgetown University Law Library, has posted The First American Law Libraries, which is forthcoming in the Green Bag Almanac and Reader:
A brief history and bibliography of the first American law libraries, including lawyers’ personal law libraries, bar association or membership law libraries, county law libraries, state law libraries, court law libraries, federal law libraries, law school libraries, law firm libraries, and prison law libraries.
--Dan Ernst