Which tennis players competed in the Battle of the Sexes in September 1973? The French word for pie chart is Camembert—True or False? What color are aircraft black boxes? Break out this trivia card deck at your next septuagenarian birthday party. Along with general questions for everyone, the 150 cards include a number of era-specific questions for those who remember the 50s, 60s, and 70s (and you know who you are).