The core TPS development period. w-edwards-deming's 1950 lectures through juse introduced statistical quality control and PDCA to Japanese industry. taiichi-ohno began implementing just-in-time, kanban, and pull-production at Toyota's Motomachi plant. shigeo-shingo began his consulting relationship with Toyota, developing smed and early poka-yoke methods. eiji-toyoda launched Toyota's Total Quality Control initiative, building on Deming's teachings. The period culminated with Toyota winning the Deming Prize in 1965 — validation that TPS had achieved world-class quality. By 1965, the core TPS principles were in place, though refinement would continue for decades. the-birth-of-lean collects oral histories from key participants in this era.