Can't you see I'm lonely, c1905 caption page (Harry Armstrong)
OCLC, Feb. 6, 2003 (hdgs.: Armstrong, Harry W., 1879-1951; Armstrong, Harry, 1879-1951; Armstrong, Harry ; usages: Harry Armstrong; Armstrong; Harry W. Armstrong; Henry W. Armstrong)
ASCAP biographical dictionary, 1966 ed. p. 20 (Armstrong, Harry, composer, singer; b. Somerville, Mass., July 22, 1879; d. Bronx, NY, Feb. 28, 1951)