Chicago Racial Demographics changing over time. This animated .gif shows the growth and expansion of Chicago's segregated black ghettoes on the south and west sides. Very dramatic. Uses census data, 1910-200
This is a frame by frame look at the maps in the Chicago Racial Segregation .gif. Information in the maps from the Chicago Area Geographic Information Study
Useful looking resource with images of the original "redlining" maps from the 1930s. These maps created the practice and the term redlining. Has HOLC A-D graded areas imposed on present day maps for cities in California and North Carolinia.
Twitter pic showing the original of the letter that LBJ sent to MLK supporting voting rights following the 1965 "We Shall Overcome" speech during the Selma protests