The Paris telephone exchange c. 1913. When a patron turned the handle-crank of his phone, a buzzer would sound and a light glow on the operator's board. 'Central' would then insert a plug into the appropriate receptacle and ask for the number, after which she would insert another plug into the proper receptacle and press a small lever to make ring the phone of the person called. The knitting mills of Clay and McCosh were located on Willow Street between Yeo and Brock. They were established in 1872, and destroyed bv fire in 1880.