Flashback to 1964. That’s six years after the mega-fad of hula hooping, and five years before the psychedelic haze of Woodstock. A time when the country teetered towards war protest and Tricky Dick … (as in, “I am not a crook.” — Richard Nixon). What could possibly supplant hula hoops and pending cultural disruption? You guessed it, cross-country skiing. In 1964, John Caldwell wrote the first edition, of eight editions in total, what’s now...