Burroughs' Encyclopaedia. How to revive the color of black cloth.

Burroughs' Encyclopaedia of Astounding Facts and Useful Information
Barkham Burroughs
1889
If a coat, clean it well, then boil from two to four ounces of logwood in your copper, or boiler, for half an hour; dip your coat in warm water, and squeeze it as dry as you can, then put it into the copper and boil it for half an hour. Take it out, and add a piece of green copperas, about the size of a horse-bean; boil it another half hour, then draw it, and  hang it in the air for an hour or two; take it down; rinse it in two or three cold waters; dry it, and let it be well brushed  with a soft brush, over which a drop or two of the oil of olives has been rubbed, then stroke your coat regularly over.