My subject, the etcher James Alphege Brewer (www.jalphegebrewer.info/gallery), began a new series of etchings in 1921 using an intense blue ink to recreate the effect of the luminescent blue hour just after the sun has set. Was there a newly available blue ink that might have been available to him at this time? If so, can you steer me to a source for more information about this?

Thank you for your help.

Ben Dunham

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