1962
Robert Blackburn, 1996
Robert Blackburn, 1973
Robert Blackburn, 1962
Robert Blackburn, 1983
Robert Blackburn, 1961
![I am Black, I am Black, I am Dangerously Black [state proof]](https://api.nga.gov/iiif/c04c97fa-d5da-4d8b-ae8a-e34bcfc33946/full/843,/0/default.jpg)
![False Start I [working proof]](https://api.nga.gov/iiif/fa3cb918-4ca5-43ba-a01d-59cbad445e8a/full/843,/0/default.jpg)
![I am Black, I am Black, I am Dangerously Black [state proof]](https://api.nga.gov/iiif/2d651e25-179b-4138-aa44-1952c4d870f0/full/843,/0/default.jpg)
![Alphabets [working proof]](https://api.nga.gov/iiif/41169ed4-aafc-484a-bb9e-5ff0eeec2304/full/843,/0/default.jpg)
