This is one of those stories in which several distinct research threads merge into one involving football's first scoreboards, the wigwag system used at Harvard Stadium, and the game simulations performed before the arrival of radio broadcasts. The common element of these topics turned out to be Arthur Irwin, whom I was unaware had any involvement in these topics until now.
This one was really interesting, Tim! Always wondered about the origin of scoreboards. The “two families in two different cities” notation for Irwin was your subtle wit written at its best.