See quotation.
1781. It is from the singing of the tree-frog, that the Americans have acquired the name of Little Isaac.—Samuel Peters, ‘History of Connecticut,’ p. 262 (Lond.). (Italics in the original.) [See also TREE-FROG, 1781.]
1837. What a “cunning little Isaac” of a brother this is.—Balt. Comml. Transcript, Aug. 16, p. 2/2: from the Richmond Compiler.
