She was also quietly named the first female postmaster in the colonies in 1775, running the busy and crucial Baltimore Post Office as well as a bookstore, printshop and newspaper. At the time, Congress was meeting just down the street from her office. So she was basically the pipeline for a lot of information during our nation's founding years - her little shop was a combination Washington Post, Snapchat, Facebook, Twitter and Instagram from 1775 to 1784. (It's now a Rite Aid.)