I don't have a Directory, but was born in Lansing in 1942 and went through the city schools. Middle schools were known as Junior High Schools until relatively recently. Walter H. French (attended) at the corner of East Mt Hope and Cedar st. and Pattengill Junior High , on North Pennsylvania,next to Lansing Eastern High (attended). C. W. Otto Junior High came later, so French and Pattengill were the only ones I recall being active in that era. Probably Googling could gain more information.