This subseries consists of Lombardi's writings. The bulk of the materials consists of Lombardi's translations of the works of the pioneer German gay civil rights activist Karl Heinrich Ulrichs; Lombardi also wrote his ONE Institute of Homophile Studies Ph.D. dissertation, as well as several articles and screenplays, on the Ulrichs' works. He also translated several other works on the history of homosexuals in the Germany and the Netherlands, and the writings of Jewish Holocaust survivors Liesel and Lore-Hermann Pintus. All these translations were originally self-published under the imprint "Urania MSS". His later translations, of Magnus Hirschfeld's Die Transvestiten (1910) and Die Homosexualität des Mannes und des Weibes (1914), and of Ernest Borneman's Das Geschlechtsleben des Kindes (1985), were published by Prometheus Books, which also issued The Riddle of "Man-Manly" Love, Lombardi's translation of Ulrichs' collected Forschungen über das Rätsel der mannmännlichen Liebe, the individual volumes of which had originally appeared under the "Urania MSS" imprint. The materials consist of photocopies of the original works, completed typescript translations, manuscript translations, notes, and other work papers. The subseries is arranged in six subsubseries: (1) Karl Heinrich Ulrichs, (2) Magnus Hirschfeld, (3) Liesel Pintus and Lore Hermann-Pintus, (4) Urania MSS, (5) Other Writings, and (6) Reviews and Royalties.