African

Mid–late 20th century

Mid–late 20th century

Mid–late 20th century

mid-20th century (circa 1940s–1960s)

Early–mid 20th century (circa 1930s–1940s)

circa 1970–1980

Early–mid 20th century

Early–mid 20th century

Mid–late 20th century

Mid–late 20th century

mid-20th century

mid-20th century

20th century

early-mid 20th century

20th century

1997

2017

2017

2017

early to mid-20th century

20th century

20th century

20th century

Mid–late 20th century