The last part of the 4-color gum printing; the paper glued onto aluminium. Printing the rest of the layers on top of the black first layer.
Coating the cadmium yellow pigment over the ivory black.
Developing in water after the exposure.
The black plus the yellow layer.
The magenta (permanent carmine) going on top next.
Developing the magenta layer.
Three layers printed.
Coating the last layer, phthalo blue.
The final wash.
Jalo Porkkala: An Oklahoman Landscape, 4-color gum print.
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