Interactive “Men of Progress” portrait is at the National Museum of American History in the "America Innovates" exhibit
which discusses that the painting is located at the National Portrait Gallery. IPBiz notes that an interactive reproduction of this
painting is presently in existence at the National Museum of American History.
See the IPBiz post
"America Innovates" at National Museum of American History, starting July 1, 2015
IPBiz would encourage those interested in invention to visit the interactive display at the history museum.