12 works carry all of these threads.
early 20th century
18th century
ca. 2300–1900 BCE
late 17th–early 18th century
8th–9th century
ca. 8th–7th century BCE
7th–6th century BCE
John M. Safford · 1838
2nd–3rd century CE
1st century BCE–3rd century CE
ca. 3650–3300 B.C.
8th–10th century
