The globe's favorite (American) public broadcaster, NPR, launched a Kickstarter campaign and made 25,000 t-shirts to follow it's journey. An increasingly popular notion (see H&M's efforts, and Patagonia's transparency about their supply chain), NPR's report paints a very clear, visual picture. Videos, charts and graphs, and even photos of how different threads are spun are interesting to browse.
Whether or not you have an interest in apparel product management or product development - it's is an interesting series of videos and supporting podcasts. Visit npr.org/shirts