nuc88-49351: MacKaye, P. Rip Van Winkle [MI] c1919 (hdg. on CtY report: De Koven, Reginald, 1861-1920; usage: Reginald De Koven)
LC data base, 6/14/88 (MLC heading: De Koven, Reginald, 1859-1920)
New York (N.Y.). Landmarks Preservation Commission. 1025 Park Avenue House, 1986 leaf 2 (Reginald De Koven, 1859-1920)
New Grove dict. of music v. 5, p. 329 (De Koven, Henry Louis Reginald; American composer, conductor and music critic; b. 4/3/1859, Middletown, Ct.; d. 1/16/1920, Chicago)
De Koven, R. The Begum, 1887 title page (Reginald DeKoven)