References in classic literature ?
But there's no place that's a patch on little London as a non-conductor of heat; it never need get too hot for a fellow here; if it does it's his own fault.
Gloves, especially kid gloves, are the perfect non-conductors of technical knowledge.
Assessment of the ESD hazard created by electrostatic charges on the necessary non-conductors in the work place is required to ensure that appropriate actions are implemented, commensurate with risk.
Samuel Cartwright of New Orleans when he pronounced Africans 'perfect non-conductors of yellow fever'.