Let the thing go.

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1848.  

        I wears no crape upon my hat,
  ’Cause I’m a packin’ sent—
I only takes a extra horn,
  Observing, “LET HER WENT!”
Durivage and Burnham, ‘Stray Subjects,’ p. 109.    

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1853.  

        If ever you a Bank Bill see,
  Letter Be! Letter Be!
For we’ve got ’em on the hip,
  Letter Rip! Letter Rip!
Daily Morning Herald, St. Louis, Jan. 19: from the Chicago Journal.    

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1853.  His [Captain Muggs’s] spirited “let her rip!” was an infinite improvement on the “fire” of the old Steuben manual.—Durivage, ‘Life Scenes,’ p. 209.

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1854.  As it is all for the good of the party, “Let her rip.”—Weekly Oregonian, April 22.

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1856.  The defendant answers “Quinine Savoy” [Quien Sabe], which, with your honor’s permission, I will interpret “Let ’er rip.”—San Francisco Call, Dec. 10.

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1857.  Presently I heard coming up from the bottom of the well: ‘All set: let her rip!’—Knick. Mag., l. 443 (Nov.).

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1860.  ‘LET HER R I P!’—conclusion of an epitaph, for the genuineness of which a correspondent vouches.—Id., lv. 660 (June).

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1878.  To-morrow mornin’ we’ll let ’er rip [the cannon] bright and early, and wake all the folks.—H. B. Stowe, ‘Poganuc People,’ ch. xvii.

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