We are all ignorant on some subjects - what is yours?

Date: 1938
Rights: Public domain, verified by the house public_domain_verified
Source: commons.wikimedia.org/wiki/File:We%20are%20all%20ignorant%20…
House: The Poster Atlas
Call number: the-poster-atlas/we-are-all-ignorant-on-some-subjects-what-is-yours

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