BiographyLongmans, Green & Co. is a British publishing company founded by Thomas Longman (1699–1755) in 1724. Longman was acquired by the global publisher Pearson, owner of Penguin and The Financial Times, in 1968. An American branch has been established in 1887 (at 15 East Sixteenth Street, New York) to distribute the titles of its London parent firm. [https://www.arthur-conan-doyle.com/index.php/Longmans,_Green_&_Co. DJackson 2/1/2021]