The Black Lesbian Newsletter, later Onyx, published from 1982 until 1984.
The GLBT Historical Society has archived it here:
https://archive.org/details/glbthistoricalsociety?query=onyx&sin=&and%5B...
Ivy Marie compiled a bibliography of items in Onyx for Sinister Wisdom and the Lesbian Poetry Archive. It is available for viewing here:
https://docs.google.com/spreadsheets/d/1VhurOYKNM9nV4HIgJoMWa6COVwACD-jO...