On Aug 7, 2011, at 7:10 PM, Christopher Menzel wrote:
And by the by, in "The Modes of Modality" (which was published in the same 1963 issue of Acta Philosophical Fennica as Kripke's "Semantical Considerations on Modal Logic")
As it is difficult to get one's hands on older volumes of this journal, let me note that Kripke's paper is reprinted in Linsky, L. (ed.), Reference and Modality
(Oxford UP, 1971) and Hintikka's in Loux, M. (ed.), The Possible and the Actual: Readings in the Metaphysics of Modality
(Cornell UP, 1979). The former especially is a bit dated, but both are still very important collections of classical, indeed, essential, papers and well worth owning for anyone who wants to understand the logical and philosophical issues of modality and modal logic. Loux's lengthy introduction in particular is worth the price of the book.