Rika Burnham is head of education at The Frick Collection in New York

Joachim Bonnemaison

and team formation to handle the safety of staff and visitors

With an essay by James Crump

Alkoxysilanes and the Consolidation of Stone Images in the Margins Rika Burnham is head ofGeorge Wheeler Stone is one of the oldest building materials, and its conservation ranks as one of the most challenging in the field. Alkoxysilanes in stone conservation can be traced back to 1861, when A. W. von Hoffman suggested their use for the deteriorating limestone on the Houses of Parliament in London. Alkoxysilane based formulations have since become the material of choice for the consolidation of stone outdoors. This volume, the first to