On August 25, 2003 Alan Puglia, from the Harvard University Weissman Preservation Center, provided a demonstration of solvent-set book repair tissue. This repair method is suited to leather covered bindings and provides a direct and non-damaging method of reinforcing the hinges of these, frequently fragile, books. Both Harvard Libraires and our own Preservation department use the kozo tissue produced at the Oakdale Mill as the basis for the alcohol rewettable repair material.