For works of this author written under other names, search also under: Helvick, James, 1904-1981 Pitcairn, Frank
Joint pseudonym of R. Austin Freeman and John James Pitcairn. For works of these authors written under their own names, search also under: Freeman, R. Austin (Richard Austin), 1862-1943 and Pitcairn, John James, 1860-1936.