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ISO: Offset Powder or French Chalk

From the contact form:

I am researching printing during the 1960s-1970s. I am particularly looking at materials used for the printing press called offset powder or french chalk. Do you know any names of these type of products made by big brands which would have been used during this period?
I appreciate you taking the time to read and consider this.



  1. What do you mean by “big brands?” Anti-offset powder was available in quantities from one pound bags to 30 gallon drums from most ink companies or general suppliers. Gans Ink Co. and Smart Supply Co. are two that come to mind.

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