Check the listing for details. Leslie Johnson Nuclear Philadelphia Atomic Energy Manhattan Project Inventor. Condition: New. Listed at 99.99 USD. Up for sale is a original, vintage, new with rust on staples, some dis colorization, complete featuring a 1957 2nd Nuclear Engineering and Science Conference held in Philadelphia PA on The Evolution of Neutron Sensing Elements Scientific Laboratory to Industrial Applications with key note speaker Leslie Johnson Neutronics Lab Tinley Park Illinois which was the inventor of this product. Issue 57-NESC-61 or AIEE No 57-401. Leslie Johnson was the inventor of Neutron Sensing Elements used with Atomic Energy. Leslie was also part of the Manhattan Project, Atomic Bomb, Argonne National Labs and many other historical facts. 8 pages total. See scanned picture for details and add 7.00 for shipping fedex ground within the continental USA not including Alaska, Canada, Mexico HI PR or any out of country shipments. Extra charges apply. Sale comes with a 5 day inspection period and if not 100% satisfied returns are accepted up to 30 days in there orig form