United for Libraries will designate Joseph Lloyd Manor in Lloyd Harbor, New York, as a Literary Landmark in honor of Jupiter Hammon, the first published African-American poet. Hammon (1711–ca.1806) was enslaved at Joseph Lloyd Manor, where he wrote powerfully about the social and moral conflicts of chattel slavery which he endured most of his life. Hammon’s known works include three essays and six poems, including “An Address to the Negroes of the State of New-York” and “An Essay on Slavery.” The designation will take place at 2 p.m. ET on October 17, which recognizes Hammon’s 309th birthday as well as Black Poetry Day.