found: LCCN 65-46678: Physikalischer Verein (Frankfurt am Main). Die Gedenkfeier für Philipp Reis, 1962(hdg.: Reis, Philipp, 1834-1874)
found: LC data base, 12-10-84(hdg.: Reis, Philipp, 1834-1874; usage: Philipp Reis)
found: The telephone appeals, 1887:t.p. (The Reis defence)
found: Encyclopædia Britannica online, Oct. 19, 2010(Johann Philipp Reis; b. Jan. 7, 1834, Gelnhausen, Hesse-Kassel, Germany; d. Jan. 14, 1874, Friedrichsdorf; Gerrman physicist who constructed a precursor of the electric telephone)
