Digital BW, The Print

For what it is worth, I have seen severe yellowing on one half of a silver-gelatin print that was 
in direct contact with ordinary newsprint (newspaper paper).  The print was on one of the 
Iford multigrade RC papers (probably version III), properly processed and washed. It may have 
been mildly selenium toned, but I can't be sure.

It was a 5x7 "snapshot" of a puppy that I had put into my desk odd-and-ends letter holder 
and forgotten about. Part of it was in contact with a newspaper clipping and the other part 
was probably against envelopes, printer paper or something of the sort.  I don't recall when I 
ran across it, but it was a least a year, and possibly two.

I have never seen another Iford print with this degree of yellowing, so whatever newsprint 
"puts out" will produce yellowing that surpasses anything I have seen in any on my ordinary 
prints, archival prints, refrigerator prints and even work prints since I started darkroom work 
in 1970.  Acid? Sulphur? Some other chemical or chemical process?

Myron