8 of 8 Mary Letourneau of Minot hangs a plaque Thursday naming the N.K. Lewis Center in Auburn in honor of her aunt, Nancy Lewis. Lewis was director of the former Regional Educational Treatment Center-Success of Students on Lake Street from 1982 to 2015. Daryn Slover/Sun Journal AUBURN — The N.K. Lewis Center on Lake Street was named Thursday and dedicated in memory of its longtime director. Nancy Lewis of Strong directed the Regional Educational Treatment Center/Success of Students from 1982 to 2015. The former is a regional program for special needs children; the latter supports special needs students from Edward Little High School.