1910 January-February Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.1: General, 1907-1913
1910 June-December Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.1: General, 1907-1913
1910 March Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.1: General, 1907-1913
1910 May Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.1: General, 1907-1913
1911 Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.1: General, 1907-1913
1912 Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.1: General, 1907-1913
1913 Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.1: General, 1907-1913
"Abraham Lincoln,", undated Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series IV: Writings of Harold Jacoby, approximately 1908-1911, undated
"A Catechetical Grotesque" Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series IV: Writings of Harold Jacoby, approximately 1908-1911, undatedApproximately, 1908
A-G Request Collection Context Columbia University Archives Department of Astronomy records, 1880-1917Series II: Correspondence of Harold Jacoby, 1888-1913Subseries II.2: Jacoby's Letter File, approximately, 1888-1891