1. Laughing gas as an anaesthetic in general surgery Author(s): MacDonald, Thomas L., author Publication: [Baltimore?] : [publisher not identified], [1893?] Subject(s): Nitrous OxideAnesthetics, Inhalation
2. Nitrous oxide anesthesia: a further contribution to the subject of nitrous oxide in general surgery Author(s): MacDonald, Thomas L., author Publication: Chicago : Medical Century Company, [1894?] Subject(s): Nitrous Oxide -- therapeutic useAnesthetics, Inhalation
