T&S says that the Nephites lived in Central America.
“Extract from Stephens’ ‘Incidents of Travel in Central America,’ ” Times and Seasons 3, no. 22 (September 15, 1842): 911–915
From Stephen's "Incidents of Travel in Central America."
"As at Copan, it was my business to prepare the different objects for Mr. Catherwood to draw. Many of the stones had to be scrubbed and cleaned; and as it was our object to have the utmost possible accuracy in the drawings, in many places scaffolds were to be erected on which to set up the camera lucida. Pawling relieved me from a great part of the labour. That the reader may know the character of the objects we had to interest us, I proceed to give a description of the building in which we lived, called the palace.
A front view of this building is given in the engraving. It does not, however, purport to be given with the same accuracy as the other drawings, the front being in a more ruined condition. It stands on an artificial elevation of an oblong form, forty feet high, three hundred and ten feet in front and rear, and two hundred and sixty feet on each side. This elevation was formerly faced with stone, which has been thrown down by the growth of trees, and its form is hardly distinguishable.
. . .
Mr. Stephens' great developments of antiquities are made bare to the eyes of all the people by reading the history of the Nephites in the Book of Mormon. They lived about the narrow neck of land, which now embraces Central America, with all the cities that can be found. Read the destruction of cities at the crucifixion of Christ, pages 459-60. Who could have dreamed that twelve years would have developed such incontrovertible testimony to the Book of Mormon? surely the Lord worketh and none can hinder.