Jerry beat me to the punch with the url but here are the plaster references:

Plaster (See also Deteriorated Plaster)
    • INCENTIVES! A Guide to the Federal Historic Preservation Tax
Incentives Program for
     Income-Producing Properties: Avoiding Incompatible Work W
     www.nps.gov/history/hps/tps/tax/incentives/avoiding_20.htm
     • The Interiors Handbook for Historic Buildings, Volume II (a
compendium of
     materials compiled for the Interiors Conference for Historic
Buildings, 1993) P
     • Preserving Historic Ornamental Plaster, Preservation Brief 23 *
     www.nps.gov/history/hps/tps/briefs/brief23.htm
     • Removing Interior Plaster to Expose Brick, ITS No. 5 W
     www.nps.gov/history/hps/tps/tax/ITS/its_05.pdf
     • Repairing Historic Flat Plaster - Walls and Ceilings,
Preservation Brief 21 *
     www.nps.gov/history/hps/tps/briefs/brief21.htm

(*) Available both as hard copy and on website
(P) Available hard copy only (order from www.nps.gov/history/hps/bookstore.htm)
(W) Available on website/on-line

Smoke

On Wed, Apr 1, 2009 at 7:06 PM, Gaye Nayton <[log in to unmask]> wrote:
> Hi
>
>
>
> I need to give conservation advice on an extensive set of stone ruins which
> still have some scraps of plaster on their inner walls.  Does anyone have
> any good advice on the best ways to conserve the plaster other than roofing
> the ruins which is extremely unlikely to happen.
>
>
>
> Regards Gaye
>
>
>
> P.S. The weather in WA is hot and dry most of the time but when it rains it
> tips down. So preventing water damage is a factor.
>
>
>



-- 
Smoke Pfeiffer

"To announce that there must be no criticism of the president, or that we
are to stand by the president right or wrong, is not only unpatriotic and
servile, but is morally treasonable to the American public." --Teddy Roosevelt