Final answer:
Phillis Wheatley is first mentioned outside of the title in her book of poetry, Poems on Various Subjects, Religious and Moral, published in 1773.
Step-by-step explanation:
The poem first mentions Phillis Wheatley outside of the title in her book of poetry, Poems on Various Subjects, Religious and Moral, which was published in 1773.
Wheatley was born in Africa in 1753 and sold into slavery in Boston. Despite being enslaved, she achieved full literacy and became one of the best-known poets of the time.