A Treatise on Painting1651
(Trattato della pittura)
by Leonardo da Vinci
This is the first pocket-sized edition of Leonardo da Vinci's treatise on painting. The editor was a print maker who owned a print shop and saw the market for an affordable edition that would appeal to artists and art lovers. He reduced the engravings of human figures in movement to line drawings to reduce the cost.
— from OpenLibrary
56 editions at OpenLibrary