From J. E. Lighter's Random House Historical Dictionary of American Slang, A-G (1994):
Frog and Toe n. Und. New York City. Cf. 1857 quot.
[*1857 "Ducange Anglicus" Vulgar Tongue: We will go to frog and toe. Thieves coming up to London with plunder.]
1859 Matsell Vocab.: Frog and Toe. The city of New-York.
1866 Nat. Police Gaz. (Nov. 3) 3: Dutch returned immediately to "frog and toe" with a gay set of whiskers, which he had raised in "stur," and a black plug "cady" on his "knob," which gave him the appearance of a superannuated "grabber."

