Now available at both dumps: 17 ambientCG materials converted by Juno for her PBR experiments. 8 smooth fabrics, 8 leathers, 1 black rubber (e.g. for unstructured shoe soles).
All materials are made of 1K PNG maps, and all come with the actual material, the PBR texture files, three texture files for Blinn-Phong and a notecard with a guide on how to make your own PBR and Blinn-Phong materials.
They can be copied, or for your convenience, the contents can be bought.