Narrative of the life of fredrick douglass, an american slave by fredrick douglass
would be
primary source
secondary source

Primary source.

Explanation:

As this particular piece of literature was written by Fredrick Douglass himself, it is considered a primary source.

As per source of: https://libguides.ithaca.edu/research101/primary

"A primary source provides direct or firsthand evidence about an event, object, person, or work of art."

Primary source

Explanation: The book was written by himself

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