see "Salinger's Feat" by John Russell in _Modern Fiction Studies_ 12 (1966) 299-311 "It wouldn not be wrong to say that feet appear in Salinger's one novel and fourteen relevant stories so prominaently as to become signatures, almost liek red in a Rubens painting." Of course this essay is mid-sixties section man stuff, but Russell does trace foot refernces in Salinger if you really want to know, will