Woodblocks, considered as material facts that traveled, carried information about the technical knowledge, craftsmanship, and social processes needed to produce them and, as recycled objects, contributed to shared practices of visualization. Mattioli, Pietro Andrea and Handsch, Georg: New Kreüterbuch Mit den allerschönsten vnd artlichsten Figuren aller Gewechß, Houghton Library, Harvard University, 1563. Photograph by Bruce Moran.