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John Mannen "Jack" Lansdale, Jr
Birth: Jan. 9, 1912
Oakland
Alameda County
California, USA
Death: Aug. 22, 2003
Harwood
Anne Arundel County
Maryland, USA

Manhattan Project Figure. Born on January 9, 1912, in Oakland, California, Lansdale attended the Virginia Military Institute in 1933, and received his law degree in 1936 from the Harvard Law School. He later joined the Cleveland, Ohio, law firm of Squire, Sanders & Dempsey, where he stayed until the beginning of World War II. During World War II he became a noted security and intelligence officer and chief of the Manhattan Project that developed the first atomic bomb in Los Alamos, New Mexico. As head of the security, he also helped to appoint J. Robert Oppenheimer as head of the scientific team. After the war he returned to the law firm of Squire, Sanders & Dempsey, where he stayed until he retired in 1987. He was also instrumental in the Alsos Misson before World War II and helped to locate and remove the products of a German atomic project. He also served as a city councilman for Shaker Heights, Ohio, from 1949 to 1963. 
 
Family links: 
 Parents:
  John Lansdale (1882 - 1961)
  May Hamilton Mannen Lansdale (1884 - 1958)
 
 Spouse:
  Metta Virginia Tomlinson Lansdale (1913 - 2001)
 
Burial:
All Hallows Cemetery
Davidsonville
Anne Arundel County
Maryland, USA
 
Maintained by: Find A Grave
Record added: Aug 27, 2003
Find A Grave Memorial# 7800173
John Mannen Jack Lansdale, Jr
Added by: Anonymous
 
John Mannen Jack Lansdale, Jr
Added by: Lucy Caldarelli
 
John Mannen Jack Lansdale, Jr
Added by: Anonymous
 
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- ljhughes
 Added: May. 11, 2014

- David Wend
 Added: Jan. 9, 2014

-Anonymous
 Added: Aug. 22, 2013
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