How is the relation between sexuality and solidarity conceptualized in Queer and Transgender Studies, practiced by queer and trans movements historically and in the present, and recorded by LGBTQ+ and other specialized archives? Does the sexual dimension of queer and trans identities and communities facilitate and/or limit solidarity across differences and different regimes of (in)equality, including between queer and trans themselves? Is sexuality inherently social or anti-social, or both? And how do sexuality and solidarity appear in the archive? How can specialized archives and heritage institutions, such as LGBTQ+ archives, record and foreground relations among heterogeneous subjects dispersed across a larger archival field?