Re-ACK when we speak to you, but reach when we read you!"
"The History of "Punch""
M. H. Spielmann
They had reached the center of the area when the surprised ACK-ACK gunners woke up.
"A Yankee Flier in Italy"
Rutherford G. Montgomery
Thin he larned to play th' ACK-car-jeen, an' cud swing it between his legs an' give an imitation iv th' cathedral bell that 'd make ye dig in ye'er pocket to see iv ye had a dime f'r a seat.
"Mr. Dooley: In the Hearts of His Countrymen"
Finley Peter Dunne