In which literary work the term 'Objective Correlative' was first popularized by T.S. Eliot?

Objective correlative, a literary theory first set forth by T.S. Eliot in the essay “Hamlet and His Problems” and published in The Sacred Wood (1920).
T.S. Eliot used this phrase to describe “a set of objects, a situation, a chain of events which shall be the formula of that particular emotion” that the poet feels and hopes to evoke in the reader.
Source: Britannica.com