Presidential Life Span

I'm working on a project to capture variation in each president's wikipedia page length- you can find the code here- as well as identifying the linguistic proximity between the wikipedia page and each president's inaugural addresses (hoping to use this proximity as a success measure for each president. i.e. if the themes/language a president chooses for the address closely align with their wiki page, perhaps it is a reflection of the president's stated achievements in the historical record). Anyways, while I am working on that I am also throwing together some graphics. Here is one for birth year and life span (of course, doesn't account for currently living presidents). 

I patched together US male life expectancy from a couple of sources, but it is a reasonable approximation. Not surprisingly, presidents have lived considerably longer than the majority of the male population- the only exception being JFK (who is the youngest elected president at 43. Teddy Roosevelt is the youngest serving president- having assumed the office at 42 after the assassination of William McKinley).