What year was Sidwell Friends School founded where Roderick H. Cox taught for nearly 40 years?
Roderick H. Cox:  He was a teacher at the Sidwell Friends School for nearly 40 years. Sidwell Friends School:  Founded in 1883 by Thomas Sidwell, its motto is ""Eluceat omnibus lux" " (English: Let the light shine out from all ), alluding to the Quaker concept of inner light.
i don't know