The Pony Express used a system of riders and horses to safely deliver mail between Missouri and Sacramento -- a distance of over 1900 miles. But how did it work? Join Katie and Sarah as they trace the rise and fall of the Pony Express in this podcast.
Learn more about your ad-choices at https://www.iheartpodcastnetwork.com

SYMHC Classics: Insular Cases
43:14

Behind the Scenes Minis: Friends and Bubble Guns
22:45

Modern Inventions That Are Actually Old
38:58