Cornell University Library Digital Collections
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Materials/Techniques
- copper engraving (printing process)1
- dark amber rubber1
- dark green and white stone1
- dark grey cryptocrystalline stone1
- fine-grained1
- gray slate1
- light brown to cream colored chert1
- possibly granitic1
- possibly sandstone1
- reddish grey slate1
- reddish grey stone1
- reddish-brown porphyritic stone1
- reproductions1
- stone1
- wood engravings (prints)1
- yellowish to brownish gray stone1