ClipArt ETC
"The contours are sketched lightly in pencil and the hachures drawn perpendicular to them, starting at the summit and making heavier strokes for steeper slopes. The rows of strokes should touch the pencil line, to avoid white streaks along the contours." —French, 1911

Shoreline Contour Map Method of Execution

"The contours are sketched lightly in pencil and the hachures drawn perpendicular to them, starting…