1967
Gemini G.E.L., 1972
Gemini G.E.L., 1985
Gemini G.E.L., 1973
Gemini G.E.L., 1980
James Webb, 1972
Gemini G.E.L., 1982
Gemini G.E.L., 1981
James Webb, 1973
Gemini G.E.L., 1994
James Webb, 1966
Gemini G.E.L., 1968
![Zone [working proof]](https://api.nga.gov/iiif/e0c7a0ce-d1f9-4b47-8a72-7bdca0154a58/full/843,/0/default.jpg)
![Berlin Dream Stamp [special proof]](https://api.nga.gov/iiif/32ccbac3-1471-4f87-9d66-f719570fed26/full/843,/0/default.jpg)
![Four Panels from Untitled 1972 [D panel, trial proof 25]](https://api.nga.gov/iiif/41ecc842-e0a3-4e4e-bdff-432dcb18595b/full/843,/0/default.jpg)
![Figure 3 [trial proof]](https://api.nga.gov/iiif/f30be980-23db-49ee-8523-bc5751b7742c/full/843,/0/default.jpg)