Painters' colours, oils, and varnishes : a practical manual
A practical manual on paints, oils and varnishes by George H. Hurst, published in London and Philadelphia in 1892 for painters and tradesmen. Its pictures are mechanical line drawings of plant machinery, such as a vertical mill with a feed hopper, a grinding stone, and a sectioned gas or heating chamber, showing how pigments were processed; a designer might draw on their precise hatching and clean technical diagram style.
