Vgl. den Brief an <persName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0000806 http://d-nb.info/gnd/118825356">Johann Albert Heinrich Reimarus</persName>, <placeName xmlns="http://www.tei-c.org/ns/1.0" ref="https://edition-humboldt.de/H0005221 https://www.geonames.org/2950159">Berlin</placeName>, 1. Juni 1791 (<bibl xmlns="http://www.tei-c.org/ns/1.0" corresp="https://edition-humboldt.de/WFDJIWK6">Humboldt 1973</bibl>, 139).