US National Archives
Nara: Founding Fathers: Delegates to the Constitutional Convention
The National Archives and Records Administration (NARA) provides biographies of all 55 delegates to the Constitutional Convention.
University of Groningen
American History: Biographies: John Lansing Jr. 1754 1829
On January 30, 1754, John Lansing was born in Albany, NY, to Gerrit Jacob and Jannetje Lansing. At age 21 Lansing had completed his study of the law and was admitted to practice. In 1781 he married Cornelia Ray. They had 10 children, 5...
Other
Chancellor John Ten Eyck Lansing, Jr.
A very nice site on the life of Lansing. It presents several biographical sketches plus many pictures.