A series of three prints, two showing stages in the color printing steps: (1) gray, beige, red and green, (2) addition of blue, (3) addition of black to make final map.
pub_note
A series of three prints, two showing stages in the color printing steps: (1) gray, beige, red and green, (2) addition of blue, (3) addition of black to make final map.
Pub Note
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