These are wood engravings, carved with very fine, precise lines rather than rough gouges, and the careful crosshatching and variety of textures of the miniature fields is particularly impressive. I love the punches of pure white on the airplane and roads, but I also love how the darkness of the pueblo, with no white at all, evokes moonlight. I don’t know whether the dark paper was always this dark - whether Cook chose a dark beige paper, or whether it’s darkened with age. In any case, I think it looks good this way.
[Pictures: Airplane, wood engraving by Howard Norton Cook, 1931;