A.J. Ayer, "The A Priori"
Jody Azzouni, "On 'On What There Is'"
George Bealer, "Propositions"
Robert Binkley, "The Surprise Examination in Modal Logic"
Ned Block, "Troubles with Functionalism"
D.A. Bochvar, "On a Three-Valued Logical Calculus..."
L.E.J. Brouwer, "Consciousness, Philosophy, and Mathematics"
Lewis Carroll, "A Logical Paradox"
Lewis Carroll, "What the Tortoise Said to Achilles"
Michael Dummett, "The Philosophical Basis of Intuitionist Logic"
Hartry Field, "Tarski's Theory of Truth"
Gottlob Frege, from the Begriffsschrift
Nelson Goodman, "The Problem of Counterfactual Conditionals"
Arend Heyting, "Disputation"
Jaakko Hintikka, "Quantifiers vs Quantification Theory"
Geoffrey Hunter, Metalogic, Chapter 21
Jerrold Katz, The Metaphysics of Meaning, Chapter 1
Stephen Kleene, "On Notation for Ordinal Numbers"
Douglas Kutach's Logic Class's Guide to Conditionals, and his bibliography, as of 2000
David Lewis, "Counterpart Theory and Propositional Attitudes"
Ruth Barcan Marcus's first and second papers on modal logic
Elliott Mendelson, Introduction to Mathematical Logic, Section 1.3
John Nolt, on Modal Logic
John Nolt, "What are Possible Worlds?"
Arthur Pap, "The Laws of Logic"
Karl Popper, "What Can Logic Do for Philosophy?" (with replies from William Kneale and A.J. Ayer)
A.N. Prior, "The Runabout Inference-Ticket"
A.N. Prior, "Three-Valued Logic and Future Contingents"
Hilary Putnam, "Three-Valued Logic"
Hilary Putnam, "The Logic of Quantum Mechanics"
W.V. Quine, "Designation and Existence"
W.V. Quine, "Existence and Quantification"
W.V. Quine, "Logic and the Reification of Universals"
W.V. Quine, "Reference and Modality"
W.V. Quine, "Quantifiers and the Propositional Attitudes"
W.V. Quine, "The Ways of Paradox"
Gillian Russell, "One True Logic?"
Bertrand Russell, "Descriptions"
Bertrand Russell, "On Denoting"
Bertrand Russell, "On Our Knowledge of General Principles"
Bertrand Russell, "How A Priori Knowledge is Possible"
John Searle, "Can Computers Think?"
Gila Sher, "Ways of Branching Quantifiers"
Raymond Smullyan, "The General Idea Behind Godel's Proof"
Alfred Tarski, "The Semantic Conception of Truth and the Foundation of Semantics"
Leslie Tharp, "Which Logic is the Right Logic?"