American
Stage Coach from Americana Suite
Clipper Ship from Americana Suite
Fire Engine from Americana Suite
1984
Earth Day
Union Pacific
Bent "Blue" [working proof]
Bent "Blue" [trial proof]
Life Mask
Double Face
, 1969
![Bent "Blue" [working proof]](https://api.nga.gov/iiif/25190e59-6ffb-4652-ab02-8434c9babb59/full/843,/0/default.jpg)
![Bent "Blue" [trial proof]](https://api.nga.gov/iiif/0897b9bd-7a5c-4315-b3e0-da35c5fc8db7/full/843,/0/default.jpg)
![Figure 0 [experimental proof]](https://api.nga.gov/iiif/8b7833fc-4575-4d90-823e-5ce94f37f8ce/full/843,/0/default.jpg)
![Figure 9 [trial proof]](https://api.nga.gov/iiif/1520fef4-8093-472e-93aa-8724458aefcc/full/843,/0/default.jpg)
![Figure 6 [trial proof]](https://api.nga.gov/iiif/e1ed54ae-ef8b-4792-86e2-64e73a8b1d64/full/843,/0/default.jpg)
![Figure 7 [trial proof]](https://api.nga.gov/iiif/f8b1a634-b575-4de8-8a02-6941a9c8338b/full/843,/0/default.jpg)
![Figure 4 [experimental trial proof]](https://api.nga.gov/iiif/751d8a1e-a0dc-4d55-9070-cb1081769801/full/843,/0/default.jpg)
![Figure 0 [trial proof]](https://api.nga.gov/iiif/8fbdb5e2-560b-4bfa-bc50-4437f727639f/full/843,/0/default.jpg)
![Figure 0 [trial proof]](https://api.nga.gov/iiif/d2997572-70c3-4e01-a70c-1d6df0f01d31/full/843,/0/default.jpg)
![Figure 5 [trial proof]](https://api.nga.gov/iiif/613e3393-988c-4eac-8e7b-cde3e00b3517/full/843,/0/default.jpg)
![Figure 0 [trial proof]](https://api.nga.gov/iiif/11f4ac03-4b4c-4ce1-90d1-2a49e63e1fe3/full/843,/0/default.jpg)
![Figure 4 [working proof]](https://api.nga.gov/iiif/1b40501b-1a1a-4c49-9a62-8d0bc7f31ac3/full/843,/0/default.jpg)
![Figure 4 [trial proof]](https://api.nga.gov/iiif/b226699b-b7e1-4418-80d6-cbfbd95b771d/full/843,/0/default.jpg)
![Figure 0 [trial proof]](https://api.nga.gov/iiif/15948f33-e42f-4402-a53a-dd37c5caada7/full/843,/0/default.jpg)
![Figure 7 [progressive proof A]](https://api.nga.gov/iiif/23485099-dc04-4a27-9876-c7dc079d2fa8/full/843,/0/default.jpg)
![Figure 9 [color trial proof]](https://api.nga.gov/iiif/91cf5eac-42a3-4cc7-994e-a6d0fe50c521/full/843,/0/default.jpg)
![Figure 0 [working proof]](https://api.nga.gov/iiif/e70300d7-3e17-422a-94f5-447e90fb23bb/full/843,/0/default.jpg)
