The Commens Dictionary
Quote from ‘A Neglected Argument for the Reality of God (G)’
[Indices are] signs which represent their objects by virtue of being connected with them in fact, although this fact be but the actual occurrence of a thought. [—] The denotation of an index is essentially singular.
MS [R] 842:32
‘Index’ (pub. 13.01.15-17:11). Quote in M. Bergman & S. Paavola (Eds.), The Commens Dictionary: Peirce's Terms in His Own Words. New Edition. Retrieved from http://www.commens.org/dictionary/entry/quote-neglected-argument-reality-god-g-5.