1. Congenital Atresia of the Foramen Ovale;Lehman;Am. J. Dis. Child.,1927
2. A Case of General Dropsy in a Foetus;Tait;Tr. Obst. Soc. London,1875
3. Cases of Cardiac Abnormalities, Montreal Gen. Hosp. Reports;Osler;Clin. and Path.,1880
4. Vieussens, R. (1715), Smith, E. (1846–1847), Vernon, H. H. (1856): Mentioned by Lehman (see under reference 1).
5. Congenital Cardiac Disease;Abbott,1927