Podcast:99% Invisible Published On: Tue Jan 24 2017 Description: Winifred Gallagher, author of How the Post Office Created America: A History, argues that the post office is not simply an inexpensive way to send a letter. The service was designed to unite a bunch of disparate towns and people … Continue reading → Subscribe to SiriusXM Podcasts+ on Apple Podcasts to listen to ad-free new episodes and get exclusive access to bonus content.