John Langdon : Oxford Biography Index entry

The Oxford Biography Index is an authoritative and accurate index of notable people – their names, their dates, and their fields of activity.

Oxford Biography Index entry

John Langdon

Langdon, John (1741–1819), merchant and politician in the United States of America

Oxford Biography Index Number 101068615 [what is this?]
http://www.oxforddnb.com/index/101068615 Primary authority: Oxford DNB

Paul David Nelson, ‘Langdon, John (1741–1819)’, first published Sept 2004, 670 words

http://dx.doi.org/10.1093/ref:odnb/68615

> View complete biography [Oxford DNB subscription required; no subscription?]

Langdon, John (26 June 1741–18 Sept. 1819)

http://www.anb.org/articles/02/02-00204.html

> View complete biography [ANB subscription required; no subscription?]