Time for all good men to come to the aid of their country

The phrase "It's time for all good men to come to the aid of their country" Where is it from and where can I find the full script?

I think that is the full script. "Now is the time for all good men to come to the aid of their party" is a typing drill that we used to practice our skills in junior high. My school made the boys take a semester of typing while the girls did a semester of wood working. Pretty radical, considering that men would never have a need to type. We pecked out now is the time, the quick brown fox and another one about Jack Dempsey for hours on end.