Great Britain. Sovereign (1760-1820 : George III)
Military commission issued by King George III to James De Lancey, February 7, 1783

Great Britain. Sovereign (1760-1820 : George III)
Military commission issued by King George III to James De Lancey to serve as Captain in the 9th Regiment of Light Dragoons, May 19, 1808

Great Britain. Sovereign (1760-1820 : George III)
Military commission issued by King George III to James De Lancey, December 20, 1786

Great Britain. Sovereign (1830-1837 : William IV),Silvester & Co.
Military commission issued by King William IV to James De Lancey to serve as Major, December 1, 1830

Great Britain. Sovereign (1830-1837 : William IV),Silvester & Co.
Military commission issued by King William IV to James De Lancey to serve as Major of the 1st King's Dragoon Guards, December 1, 1830

Great Britain. Sovereign (1760-1820 : George III)
Military commission issued by King George III to James De Lancey, September 18, 1806

Great Britain. Army,William Howe, Viscount Howe (1729-1814)
Military commission issued by Robert Mackenzie on behalf of Sir William Howe to John Peter De Lancey to serve as Major in the First Battalion of Pennsylvania Loyalists, October 14, 1777

New York (N.Y.). City Council,Robert Lurting (-1735)
Certificate issued by Mayor Robert Lurting on behalf of the Aldermen of the City of New York to James De Lancey, admitting him as a freeman, February 11, 1730

Great Britain. Sovereign (1760-1820 : George III)
Military commission issued by King George III to James De Lancey, January 24, 1805