[MassHistPres] Cleaning Sandstone

[BMangum411 at aol.com]

I strongly recommend that you get in touch with a stone or architecture 
conservator to help you determine what materials and methods would give you the 
best result.    Ivan Myjer of Building and Monument Conservation in Arlington put 
together a conference on the conservation (including cleaning and 
stabilization) of brownstone several years ago.   I'm sure he would be willing to talk 
with you further.   His number is 781-641-1603.   There are also other 
conservators in the area who could help you.   The American Institute for Conservation 
of Historic and Artistic Works has a list of conservators who have agreed to 
abide by their code of ethics and guidelines for practice.   You can go to 
their website at http://aic.stanford.edu   I hope this is helpful to you.

Barbara Mangum
Sculpture and Dec Arts Conservation Services
Somerville, MA
bmangum11 at aol.com