An episode of The Engines of Our Ingenuity explores the history of correspondence schools. Episode 3404 examines the rise and fall of ICS, also known as The International Correspondence School. This institution is now referred to as International Correspondence Schools.

Further information about the topic is available from the source. The episode delves into the story of ICS, providing insight into its past. Details about the episode and its content can be found through the source, offering a deeper look into the history of correspondence schools and the story of ICS.