Collection of selected symbols from the Stewdio Icon Library (SIL) broadcast anonymously through the US Postal Service.

A sizable number of Mystery Postcards were sent to various organizations to promote that which does not exist. It is part of our ongoing Ethereal Marketing® research which produces messages in a distributed and seemingly haphazard fashion; asserting authorship by not. The form is a nod to Thomas Pynchon's The Crying of Lot 49 and William Gibson's Pattern Recognition. There may be a message here. The addressee typeface is Stewdio Hand.