The Smithsonian Institution Scholarly Press recently published "Going Beyond
Appearances: Examination of Hidden Paint Layers in a Gulistan of Sa'di from the
Freer Gallery of Art," in Smithsonian Contributions to Museum Conservation, no.
8. The authors are Elisabetta Polidori, Emily Jacobson
In response to Fiona McLees's question about pH-induced color shifts in organic
colorants on paper. I have seen the leaching of blue colorant from Japanese
woodblock prints into buffered matboards. It's been difficult to photograph as
it has been very subtle but I could try to send pictures
