The mattress stitch is arguably the best way to seam handknit projects. Whether we're talking sweater pieces or blocks for an afghan, mattress stitch joins pieces simply and beautifully. This tutorial is especially timely for those who've been participating in the Building Blocks and Building in Color groups. I know several of the ladies in the Tuesday evening Open Knitting Group are doing one or both of those and several of them haven't done mattress stitch before. This tutorial is for you! Shelly recently brought her Building Blocks pieces in to our Tuesday group to show off and get some help with putting everything together.