RST I, <ref xmlns="http://www.tei-c.org/ns/1.0" target="https://edition-humboldt.de/H0005449/32v">32v</ref>; ERST <ref xmlns="http://www.tei-c.org/ns/1.0" target="https://edition-humboldt.de/H0016785/48v">48v</ref>; <bibl xmlns="http://www.tei-c.org/ns/1.0" corresp="https://edition-humboldt.de/BH8W3QPH">Rose 1837/1842</bibl>, <ref xmlns="http://www.tei-c.org/ns/1.0" target="https://www.deutschestextarchiv.de/rose_ural02_1842/32">II, 14</ref>; Brief an Cancrin vom 27. August 1829 (<bibl xmlns="http://www.tei-c.org/ns/1.0" corresp="https://edition-humboldt.de/RQ7INXBQ">Humboldt 2009a</bibl>, 177f., Nr. 55)