In this series we are focusing on lost stories in innovation history. At Humantific we have always had great interest in the unsung milestones, forgotten stories and off the beaten path landmarks of innovation history as they tend to inform present day understanding significantly. Many human-centered innovation challenges tend to repeat themselves, generation after generation. Without historical innovation knowledge, organizations can expend a lot of energy reinventing wheels. With the goal of inspiring others, we share a few gems from our lost stories innovation library.