Q. Where can I find the names of American modernist writers and Harlem Renaissance writers?

This Britannica entry on American Modernism talks about Modernism and the second paragraph entitled Modernism in Literature, talks about several authors who wrote during this period.

The History Channel has an article entitled 7 Writers of the Harlem Renaissance where seven authors of this period are examined.  The Poetry Foundation has a Harlem Renaissance Collection.  Click on the link and scroll down until you see the different time periods of the Harlem Renaissance referenced with author names and works.