Focus at Infinity is the catalogue of the first major institutional exhibition of the New York artist Rosemarie Castoro (1939-2015) focused on the period 1964-79. The publication draws together an extensive selection of images concerning her paintings, sculptures, drawings, language and performances, and confirms the standing of an artist who, like so many other women artists, has not received the attention she deserves. The exhibition shows her work in detail for the first time, revealing the diversity of her practice, which encompassed abstract painting, conceptual works, performative actions in the street and studio, poetry, mail art, sculpture, installation and land art. It explores the context of her work, her activism including her role in the Art Workers' Coalition, her association with contemporaries such as Carl Andre, Hollis Frampton, Sol LeWitt and Yvonne Rainer among others, and her relation to feminism. The exhibition will consider Castoro's unique contribution to `intermedia', interrelating painting, sculpture, drawing, language and performance. It will address how key contributors to Minimalism have yet to be given due attention, particularly the coterie of woman artists in a movement that is often erroneously identified as essentially masculine, who, as Lippard said, `subverted minimalism on its own turf'. As a result of a consideration of Castoro's work, the exhibition will emphasise the need to rethink Minimalism, expanding it to include a greater range of artists and to question its accepted tenets