1978
Patrons' Permanent Fund, 1775
Patrons' Permanent Fund, 1928
Patrons' Permanent Fund, 1618
Joshua P. Smith, 1983
Patrons' Permanent Fund, 1923
Patrons' Permanent Fund, 1976
Dieter Appelt, 1977
Patrons' Permanent Fund, 1969
Patrons' Permanent Fund, 1649
Patrons' Permanent Fund, 1946
Patrons' Permanent Fund, 1968
![Flagstones (b) [trial proof 1]](https://api.nga.gov/iiif/7526fe28-ba05-41c2-adee-3c6b2613ec00/full/843,/0/default.jpg)
![Figure 0 [experimental proof]](https://api.nga.gov/iiif/d3f97aa7-57b5-4ec1-b233-743f270a070b/full/843,/0/default.jpg)
![Figure 4 [working proof]](https://api.nga.gov/iiif/23b79df4-7c44-4763-8578-eb4b2130ae70/full/843,/0/default.jpg)