Map of the Transatlantic slave trade.

Routes of the First Great Migration, 1916-1930.

The migrants followed the nearest railroad routes out of their homeplaces.

Read about the centrality of railroads to the Great Migration.
The routes of the Second Great Migration, 1940-1970.

Chart showing the distribution of the African-American population during the two periods of migration.

Chart showing the movement over time of the black population out of the rural South.

Portia Maultsby’s timeline chart of African-American music.

Dr. Maultsby’s chart as a .pdf — view can be expanded.

The digital guide to the art exhibit at Binghamton University from Fall 2019, “not but nothing other: African-American Portrayals, 1930s to Today.”
http://scalar.usc.edu/works/not-but-nothing-other-african-american-portrayals-1930s-to-today/index
View some beautiful hand-drawn graphs and charts made by W.E.B. Du Bois to quantify the African-American experience here: