Which poem by J.R.R. Tolkien was published in 1931 and features the character Tom Bombadil?

The poem featuring Tom Bombadil that J.R.R. Tolkien published in 1931 is titled The Adventures of Tom Bombadil.

Tolkien first published the poem “The Adventures of Tom Bombadil” in the Oxford Magazine in 1934, not 1931. The date in the question refers to the earlier appearance of Tom Bombadil in Tolkien’s poem “The Oxford Magazine,” so this wording is not accurate as stated.

The later book The Adventures of Tom Bombadil was published in 1962. It contains sixteen poems, including the title poem and “Bombadil Goes Boating,” and presents the poems as items collected from the traditions of Middle-earth.

Tom Bombadil also appears in The Fellowship of the Ring, where he helps the hobbits after they leave the Shire. Because the title poem and the later collection are often conflated, publication dates should be checked carefully.