American
Thirteenth Stone
Untitled
Untitled (1)
Light Bulb [trial proof D]
Light Bulb [trial proof A]
Light Bulb [trial proof B]
Light Bulb [trial proof C]
, 1966
, 1968
, 1970
![Light Bulb [trial proof D]](https://api.nga.gov/iiif/35ad584d-a077-40cc-8edb-a5a1d4b70f23/full/843,/0/default.jpg)
![Light Bulb [trial proof A]](https://api.nga.gov/iiif/628b67b2-3ca4-41a3-b05c-ac6c76fdda17/full/843,/0/default.jpg)
![Light Bulb [trial proof B]](https://api.nga.gov/iiif/edafcfc5-67d5-457d-bf83-544405c6a23a/full/843,/0/default.jpg)
![Light Bulb [trial proof C]](https://api.nga.gov/iiif/f287da4e-2978-4c50-bde9-e6113c622e9f/full/843,/0/default.jpg)
![Souvenir [trial proof]](https://api.nga.gov/iiif/d7da143c-f351-43bf-98c0-8ccda1b98f4b/full/843,/0/default.jpg)
![Light Bulb [working proof]](https://api.nga.gov/iiif/882b1de3-7d09-4363-b3c9-55cc8e9ffae8/full/843,/0/default.jpg)