Digital BW, The Print

I think we should be more specific with terminology here. Alpha
cellulose is a treated woodpulp that is generally accepted in the
paper industry as having very favorable long term stability
characteristics. Of course there are always qualifiers with regard to
quality of materials and chemical process, but the reputable paper
manufactuers all have access to alpha cellulose material that,
according to everything I've read recently should not cause alarm
among photographers and others concerned with print longevity. There
are papers that are a mix of alpha cellulose and cotton. The economic
benefit of alpha cellulose for paper vendors is that it is a less
expensive alternative to cotton.

-- 
amadou diallo
Author, Mastering Digital Black and White
www.masteringdigitalbwbook.com