Reading old trade magazines is always the right way to get knowledge and inspiration. Like with this 1911 issue of the Dutch Printer's Yearbook, where I found mentions of "starch marbling." This issue of the Russian magazine Art of Print isn't an exception.
Found this beautiful selection of decorated initials while browsing a volume of the Studio - an old magazine about fine and applied arts.
Last week an exhibition of incunables opened at the Russian State Library in Moscow. There are many notable objects shown there, but arguably the jewel of the show is one of the few remaining Gutenberg Bibles printed on vellum.