such as Max Stirner and Max Stirner and Anarchism. Free love, homosexuals and feminists German Stirnerist Adolf Brand produced the homosexual periodical Der Eigene in 1896. This was the first ongoing homosexual publication in the world and ran until 1931. The name was taken from the writings of Stirner (who had greatly influenced the young Brand) and refers to Stirner's concept of "self-ownership" of the individual. Another early homosexual activist influenced by Stirner was John Henry Mackay. Mackay also used the works of Stirner to justify "man-boy love" and the abolition of the age of consent. Feminists influenced by Stirner include anarchist Emma Goldman, as well as Dora Marsden who founded the journals The Freewoman, The New Freewoman, and The Egoist. Stirner also influenced free love and polyamory propagandist Émile Armand in the context of French individualist anarchism of the early 20th century which is known for "[t]he call of nudist naturism, the strong defense of birth control methods, the idea of "unions of egoists" with the sole justification of sexual practices". Post-structuralism In his book Specters of Marx, influential French poststructuralist thinker Jacques Derrida dealt with Stirner and his relationship with Marx while also analysing Stirner's concept of "specters" or "spooks". Gilles Deleuze, another key thinker associated with post-structuralism, mentions Stirner briefly in his book The Logic of Sense. Saul Newman calls Stirner a proto-poststructuralist who on the one hand had essentially anticipated modern post-structuralists such as Foucault, Lacan, Deleuze and Derrida, but on the other had already transcended them, thus providing what they were unable to—i.e. a ground for a non-essentialist critique of present liberal capitalist society. This is particularly evident in Stirner's identification of the self with a "creative nothing", a thing that cannot be bound by ideology, inaccessible to representation in language. Karl Marx and Friedrich Engels Friedrich Engels commented on Stirner in poetry at the time of Die Freien: Engels once even recalled at how they were "great friends" (Duzbrüder). In November 1844, Engels wrote a letter to Karl Marx in which he first reported a visit to Moses Hess in Cologne and then went on to note that during this visit Hess had given him a press copy of a new book by Stirner, The Ego and Its Own. In his letter to Marx, Engels promised to send a copy of the book to him, for it certainly deserved their attention as Stirner "had