Conversation so far:
when was learning to read and write published
Life and Times of Frederick Douglass by Frederick Douglass was published in 1881.
Did Frederick Douglass publish works other than Life and Times?
Narrative of the Life of Frederick Douglass is an 1845 memoir and treatise on abolition written by Frederick Douglass during his time in Lynn, Massachusetts.

Question: What does the second term mean?
Self-contained rewrite: What is the definition of a treatise?