Medieval Memoria Online (MeMO) has recently launched an extensive database containing images, inscriptions, epitaphs, altarpieces, tomb monuments, stained glass, and archival sources.
This valuable resource is the result of a multi-year project headed by art historian Truus van Bueren at the University of Utrecht. The research team has catalogued material for the area corresponding to what is today the Netherlands for the time up to 1580.
You can access it at: http://memo.hum.uu.nl/
