<p>A Salvation Army worker makes donuts and pies for World War I troops in France in a photo from a 1920 issue of <i>National Geographic</i>.</p>
Supporting the Troops
A Salvation Army worker makes donuts and pies for World War I troops in France in a photo from a 1920 issue of National Geographic.
- Photo Gallery
9 Mouthwatering Pictures of Pie for Pi Day
Celebrate the quirky holiday by enjoying these photos from our archives.
March 14 is Pi Day, because the date (3/14) contains the first three digits of the number pi, or 𝛑, the ratio of a circle’s circumference to its diameter.
But if we’re being honest, most people don’t get excited about Pi Day because they loooove geometry—they celebrate the holiday because it is a great excuse to eat pie. It’s also a great excuse to enjoy these historic photos of people making, serving, or eating pie.
DON'T MISS THE REST OF THIS STORY!
Create a free account to continue and get unlimited access to hundreds of Nat Geo articles, plus newsletters.
