found: Problems of Self-Discovery and Self-Direction, 1935
found: BL database, 25 Jan. 2012(hdg.: Hand, Harold Curtis)
found: LC database, Oct. 9, 2014(hdg.: Hand, Harold Curtis, 1901- ; usage: Harold C. Hand, H.C. Hand, Harold Curtis Hand)
found: The schools and national security : recommendations for elementary and secondary schools, 1951:title page (edited by Charles W. Sanford, Harold C. Hand, Willard B. Spalding)
found: ancestry.com, August 20, 2020(Harold Curtis Hand; born 5 January 1901 in Piper City, Illinois; died 19 June 1967 in Rhine, Sheboygan, Wisconsin)