Respectfully Quoted: A Dictionary of Quotations. 1989.
Now is the time for all good men to come to the aid of the party.
Author unknown. Sentence devised to test the speed of the first typewriter, Milwaukee, Wisconsin, fall of 1867, during an exciting political campaign.Charles E. Weller, The Early History of the Typewriter, p. 21 (1918).
Other sources credit Weller as author of the famous sentence, but he does not claim the credit in his book. The sentence is still in use, though it is often written as their party.