SELENIUM / POLYSULPHIDE LINKS
   
Succinct roundup from Ed Buffaloe
http://unblinkingeye.com/Articles/Archival/archival.html
   

Toning and Permanence of Silver Gelatin Prints by Douglas W. Nishimura,
Image Permanence Institute, RIT, for largeformatphotography.info  

http://largeformatphotography.info/toning-permanence.html

Lengthy thread discussing Nishimura research in Large Format Photography

http://largeformatphotography.info/lfforum/topic/502270.html


 
Paper toning and permanence: experimental data (further discussion thread from Large Format Photography)

http://largeformatphotography.info/lfforum/topic/502397.html

 

 
Silvergrain Wiki site, discussion of selenium/polysulphide permanence

http://wiki.silvergrain.org/wiki/index.php/Toning

   

The American Institute for Conservation (statement refers to polysulphide)

http://aic.stanford.edu/sg/bpg/annual/v11/bp11-35.html
   

Photobanter forum threads discussing selenium vs.polysulphide

http://www.photobanter.com/showpost.php?p=3715&postcount=10
http://www.photobanter.com/showthread.php?t=459
   
The final report for NEH/NHPRC on the use of potassium polysulfide toning for... enhanced permanence
http://palimpsest.stanford.edu/byorg/abbey/an/an15/an15-3/an15-316.html
   
Library Preservation - Preventing mould
http://www.librarypreservation.org/mee/management/mold.html
   
Thread from Freelists, contribution by Tim Rudman
http://www.freelists.org/archives/pure-silver/12-2004/msg00275.html
   

Archival processing of black-and-white photographs as preventive conservation - PDF

http://www.palimpsest.stanford.edu/iada/ta95_123.pdf