Re: Fratelli Alanari - celloidine prints
As usual, Google does pretty well for such queries, andsalt covered paper which was sensitized after silver nitrate)Sorry: ...after *with* silver nitrate...
gives most of the information above as its No 1 pick on a search on 'Celloidin paper'.
It also tells you about the similar Protalbin paper
which used "an alcohol-soluble vegetable albumen obtained from corn" and was particularly popular in the tropics.
And, best of all I've looked at so far, it takes you to a fascinating article on Collodio-Chloride Papers by Sylvie Penichon in the Journal of the American Institute for Conservation:
Her feature "DIFFERENCES IN IMAGE TONALITY PRODUCED BY DIFFERENT TONING PROTOCOLS FOR MATTE COLLODION PHOTOGRAPHS" starts at
with the sentence:
"For many years, caretakers of photograph collections and photograph conservators have mistakenly identified matte collodion prints as platinum prints."
This may have a particular interest here given some past conversations about the mistaken classification of kallitypes as platinum prints.
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The Buildings of London etc: http://londonphotographs.co.uk/