There are links to online resources such as the National Gallery in London, the British Library, German National Museum, Web Gallery of Art, and other online collections. Larsdatter's collection includes link to writing instruments and implements, in particular ink containers (inkwells, inkstands, ink pots), pens (quills), pen boxes and writing desks. An excellent resource.
A nice touch: What is it that you seek? At the front page of Karen's website a valet awaits to escort you!