The National Hockey League didn’t require its players to wear helmets until the 1979-80 season. Even then, veteran players who hadn’t worn them previously weren’t required to. The last NHLer to play helmetless, Craig MacTavish, retired in 1997 and was never seriously hurt.

In the Joseph Heller novel “Catch-22,” what does mess hall officer and entrepreneur Milo Minderbinder cover with chocolate and serve to the troops?

Spark plugs

B) Cotton

C) Meat loaf

D) Toothpicks

Thursday’s answer: Nine years before his 1809 steamboat, Robert Fulton designed the first practical submarine, which was commissioned by Napoleon.

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