Geahča maid: Ulrichs :
- Karl Heinrich Ulrichs : pioniere del moderno movimento gay /
- Gedenkschrift Celebrating the Bicentennial Birthday Anniversary of Karl Heinrich Ulrichs (1825-1895) : Architect of LGBT Pride, Community and Movement
- Anarchist of love : the secret life of John Henry Mackay /
- Anarchist of love : the secret life of John Henry Mackay /
- Anarchico d'amore : la vita segreta di John Henry Mackay /
- Sex e Math in the Harvard yard The memories of James Mills Peirce
Dahkki: Kennedy, Hubert C.
- Karl Heinrich Ulrichs : pioniere del moderno movimento gay /
- Anarchico d'amore : la vita segreta di John Henry Mackay /
- Ulrichs : the life and works of Karl Heinrich Ulrichs : pioneer of the modern gay movement /
- Homosexuality and male bonding in pre-Nazi Germany : the youth movement, the gay movement, and male bonding before Hitler's rise : original transcripts from Der Eigene, the first gay journal in the world /
- Anarchist of love : the secret life of John Henry Mackay /
- Anarchist of love : the secret life of John Henry Mackay /