A very long period. The Knickerbocker Magazine (1836) has a dogs age: vii. 17 (Jan.).
1845. We wont hear the eend of this bisness for a coons age, you see if we do.W. T. Thompson, Chronicles of Pineville, p. 72 (Phila.).
1845. He can talk more sense in a minute than old Rogers can understand in a coons age.Id., p. 128.
1846. Jim Clark has gone to the woods for fat pine, and Peggy Willet is along to take a lite for him,theyve been gone a coons age.W. T. Porter, ed., A Quarter Race in Kentucky, etc., p. 85.
1848. I never did like this Yanky way of married people livin all over creation without seein one another moren once in a coons age.W. T. Thompson, Major Joness Sketches of Travel, p. 16 (Phila.).
1851. We had not seen the amount of cash mentioned as lost, in a coons age.J. J. Hooper, Adventures of Captain Simon Suggs, &c., p. 155 (Phila.).
1851. Thats the best red eye Ive swallered in er coons age, said the speaker, after bolting a caulker.Polly Peablossoms Wedding, &c., p. 74.
1851. This child haint had that much money in a coons age.Id., p. 99.
1853. Hello, old hoss, whar hev you been this coons age?S. A. Hammett (Philip Paxton), A Stray Yankee in Texas, p. 201.