Religious co-production may take many forms, arising from interactions that may be physical or purely imaginary, and processes of transference and adaption which may be candidly admitted or carefully concealed. The Alba Bible is comparatively rare in advertising itself as the result of a deliberate collaboration between members of different religious communities. It is a late-medieval Bible, translated into medieval Castilian for a Christian patron by a rabbi, working under the supervision of several Christian friars, and illustrated by a team of artists in Toledo. The result was a remarkable interreligious coproduction created during a period in which Jewish life in medieval Spain was particularly precarious. After many centuries of obscurity, the Bible has been embraced in recent decades as a symbol of the deep roots of Sephardi Jewish culture in Spain and as an example of tolerant interfaith collaboration. For all that, the story of its origins makes it an ambivalent emblem for the cooperation across the assymetries of power between religious majority and minority.