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2. Peirce, Ch.S.: Evolutionary love. In: Houser, N., Kloesel, N. (eds.) The Essential Peirce. Selected Philosophical Writings, vol. 1 (1867–1893), pp. 352–371. Indiana University Press, Bloomington (1992)
3. Peirce, Ch.S.: A guess at the riddle. In: Houser, N., Kloesel, N. (eds.) The Essential Peirce. Selected Philosophical Writings, vol. 1 (1867–1893), pp. 245–279. Indiana University Press, Bloomington (1992)
4. Peirce, Ch.S.: On the algebra of logic: a contribution to the philosophy of notation [Excerpts]. In: Houser, N., Kloesel, N. (eds.) The Essential Peirce. Selected Philosophical Writings, vol. 1 (1867–1893), pp. 225–228. Indiana University Press, Bloomington (1992)
5. Peirce, Ch.S.: The probability of induction. In: Houser, N., Kloesel, N. (eds.) The Essential Peirce. Selected Philosophical Writings, vol. 1 (1867–1893), pp. 155–169. Indiana University Press, Bloomington (1992)