From the artist's website for "HOMU: The Homeless Museum"::

Between the years 2003 and 2009, Filip Noterdaeme wrote 25 open letters to museum directors, curators, artists, and other art world insiders.

He never received a reply from any of them.

In late 2010, he created a limited edition boxed set that contains hand-signed copies of all 25 letters in individual, sealed envelopes.