In early 2015, I decided to give form to an idea that had long been simmering: a 'periodic table' of New Hampshire's 4000-foot mountains. It was intended to be a gift for one or two hiking friends. Several years and many print runs later, I'm still humbled by the positive reception. My sister and I continue to dream up products that abide by one simple principle: make things we would've enjoyed as a young hikers.