This Week on History Happy Hour: Civil War historian Scott Hartwig has been researching the Battle of Antietam for decades. Now he has written a definitive hour-by-hour tactical history of the battle, I Dread the Thought of the Place: The Battle of Antietam and the End of the Maryland Campaign. The memory of the Battle of Antietam was so haunting that when, nine months later, Major Rufus Dawes learned another Antietam battle might be on the horizon, he wrote, "I hope not, I dread the thought of the place."

Join us as Scott takes a deep dive into the bloodiest day in American military history.

This Week on History Happy Hour: Frederika Mandlebaum was a nice Jewish mother living in New York in the 1870s. She was also America’s first great organized crime boss. She planned robberies throughout the country - handpicking a cadre of the finest bank robbers, housebreakers and shoplifters to turn street crime into big business.

Chris and Rick explore the story of this entrepreneurial criminal mastermind with HHH Alum Margalit Fox, author of The Talented Mrs. Mandlebaum.

This Week on History Happy Hour: Between 1941 and 1945, more than eight hundred shiploads of supplies were delivered to the Soviet Union protected by Allied naval forces. But more than 100 ships were lost in this duty. Each convoy was a battle against the elements, and the Germans - with both sides relying heavily on signals intelligence to intercept and break each other’s codes. The resulting ocean engagements involved aircraft carriers, battleships, cruisers and submarines…and the frightening weather of the Arctic sea.

In this encore episode, we explore this dramatic story with Bletchley Park historian David Kenyon, author of Arctic Convoys: Bletchley Park and the War for the Seas.

David Kenyon is responsible for historical research in support of all public content at Bletchley Park. He also worked for a number of years as an archaeologist, and is one of the UK’s leading experts on the archaeology of the First World War. He has worked on numerous historical television and film projects, including acting as historical advisor to Warhorse in 2010. His books include Bletchley Park and D-Day and Horsemen in No Man’s Land.