This emerald-green pigment was used in Victorian-era wallpaper, garments and—as Winterthur found out—in cloth book covers.

The list of potentially hazardous titles was put together by the Poison Book Project. The initiative is run by researchers from the University of Delaware in collaboration with Delaware's ...

A rare book laced with a deadly poison has been discovered by librarians in Leeds. My Own Garden: The Young Gardener's Yearbook was published in 1855 and owes its vivid green colour to a dye ...