LCCN 07-1162: His The ambulance surgeon, 1862 (hdg.: Appia, P. Louis, 1818-1898; usage: P.L. Appia)
Library of Congress Manuscript Division for the Papers of Clara Barton, 1805-1958 (Louis Appia; of the International Committee of the Red Cross)
Spartacus Educational website, Apr. 14, 2004 (Louis Appia; b. 1818 in Frankfurt-am-Main; graduated as a doctor in Heidelberg in 1843 with an interest in military medicine; served as a doctor in Lombardy; member of Geneva Society for Public Welfare; board member of International Committee for Relief to the Wounded, later International Committee of the Red Cross; helped organize international conference in 1864 which produced the Geneva Convention; d. in 1898)