Two more essay collections were later published as books, Friendly Fire (Autonomedia, 1992) and Beneath the Underground (Feral House, 1994), the latter devoted to the do-it-yourself/fanzine subculture of the '80s and '90s which he called "the marginals milieu" and in which he had been heavily involved.
Black has expressed an interest, which grew out of his polemics with Bookchin, in the relation of democracy to anarchism.