John Cameron, Association Football and How to Play It (1908)
“ When the referee "signals," by whistle or otherwise, at the commencement of the game, it means that he is ready and the players can start as soon as they like, but the period of play is counted from the actual kick. The offside rule is very difficult for the spectator; talk to them, and they will tell you confidently that no player can be offside if he has three of the opposition in front of him, that is, nearer to their own goal. Yet, as Mr. William Pickford has pointed out, a player could be off-side with eleven opponents in front of him. ”
