In 1914, American chemist John J. Porter produced the first line of chemistry sets, “Chemcraft.” It was such a hit that a few years later, science fanatic A.C. Gilbert, maker of Erector Sets and, later, American Flyer model trains, put out his own chemistry sets.

Apollo 17 crew from left: Lunar Module Pilot Harrison Schmitt,
Commander Eugene Cernan, and Command Module Pilot Ronald
Evans (seated).

Launch time was at 12:33 a.m. Eastern Standard Time

                 
                     David Warren "Dave" Brubeck

             (December 6, 1920 – December 5, 2012)