Resumen de Books in Brief.

• The article reviews several books including "112 Greene Street: The Early Years, 1970-1974" by Jessamyn Fiore, "Artist-Run Spaces: Nonprofit Collective Organizations in the 1960s & 1970s" edited by Gabriele Detterer and "Happenings: New York, 1958-1963" by Mildred L. Glimcher.