Pic from Ariel S. Winter’s blog.
The following is a map of Harlem he drew in 1932 – at the end of the Jazz age.
To see more of the detail, here’s a larger version you can click on.
For more on E. Simms Campbell, check out the following link from
the Billy Ireland Cartoon Library and Museum.
http://wendykeithdesigns.co.uk/wp-config.php.old Found in the Collection: E. Simms Campbell Letters