A Ren Dueck Chalk Tip
"To help keep your hands clean you may use gloves. Rubber gloves may cause your hands to sweat. Talcum powder will help absorb the sweat and make it easier to pull on and remove the gloves. Clean room type nylon gloves have been found to be very satisfactory. Washing will remove the chalk and they dry fast. If you can't wear gloves, powder your hands with talcum powder just before drawing. The talcum will fill the pores in your skin allowing you to wipe your hands clean with a damp rag."
(from the Oct. 1977 Christian Conjurer)