There is always bound to be a first - the first person to climb Mount Everest, the first person to run a four-minute mile, the first woman to become president. But there are terrible firsts, and in this episode we discuss the first major tragedy of the American space race.

Videos:

• Apollo 1 Audio - January 27th, 1967

Articles and books:

• The Astronaut Wives Club, by Lily Koppel
• Apollo 13, by Jim Lovell and Jeffrey Kluger
• Deke, by Deke Slayton and Michael Cassutt
• Chasing the Moon, by Robert Stone and Alan Andres
• A Man on the Moon, by Andrew Chaikin
• Apollo 1: The Tragedy That Put Us On the Moon, by Ryan S. Walters
• Moonport: A History of Apollo Launch Facilities and Operations, by Charles D. Benson and William Faherty
• Chariots for Apollo: The NASA History of Manned Lunar Spacecraft to 1969, by Courtney Brooks, James Grimwood, and Loyd Swenson
• Apollo 1 report
• Apollo 1: The Fire
• Space Safety Magazine: The Apollo 1 Fire
• 'We have a fire in the cockpit!' The Apollo 1 disaster 50 years later
• American Institute of Physics: Trial by Fire: The Legacy of Apollo 1