What year were Girl Scout cookies first sold?

1917 was when they first started selling the cookies, but that started with only a few troops who were selling cookies that were baked back home. The first recorded sale was The Mistletoe Troop of Muskogee in Oklahoma some time in December of 1917. They were all home made until 1934, when a Philadelphians Girl Scout Council began to commercially bake and sell the cookies. Finally, in 1936, Girl Scout cookies went nation wide and are still freakin awesome to this day.