There is a new kid on the block testing inkjet papers and ink to see how archival/fade resistant inkjet prints really can be. Aadenburg Imaging & Archives has some results posted and provides an alternative to the designated father of permanence testing, Wilhelm Imaging Research . They test targets printed by professional printers (including Still River Editions) and put them through some extreme conditions. The website allows access to many of the reports without needing to join ($). Good website to keep returning to as more results are posted.