Collection
- Helen Quirini Papers, 1898-20101
- Henry M. Pachter (Heinz Paechter) Papers, 1907-19871
- Henry S. Manley Papers, 1849-19601
- Herbert Kessler Papers, Undated1
- Herbert Sartori Papers, 1915-19691
- Howard Palfrey Jones Papers, 1917-19731
- Hudson Valley District Council of Carpenters Records, 1887-19901
- International Brotherhood of Electrical Workers, Local 166 Records, 1909-19801
- International Brotherhood of Painters and Allied Trades of the United States and Canada, Local 201 Records, 1900-19821
- International Typographical Union Collection, 1870-19361
- International Union of Bricklayers and Allied Craftsmen, Local 16 Records, 1886-19301
- James Sullivan Papers, Undated1
- Joachim Maass Papers, 1901-19721
- John E. Kingston Papers, Undated1
- John H. E. Fried Papers, 1911-19901
- John H. Herz Papers, 1917-20051
- John H. Robinson Papers, 1912-19191
- Joseph E. Persico Papers, 1910-20031
- Joseph Murphy Papers, Undated1
- Julius V. Wyler Papers, 1903-19591