Metal Engravings
Grusonia grahamii 
Echinocereus berlandieri 
Echinocereus dasyacanthus 
Coryphantha echinus 
Various Subspecies of Mammillaria heyderi 
Mammillaria grahamii & M. barbata 
The Circle of Traitors: Dante Striking against Bocca degli Abati 
The Pit of Disease: The Falsifiers 
The Ditch of Thieves: The Serpent Attacking Buoso Donati 
The Ditch of Thieves: The Six-Footed Serpent Attacking Agnolo Brunelleschi 
The Ditch of the Corrupt Officials: The Baffled Devils Fighting 
The Ditch of the Corrupt Officials: Devils Tormenting Ciampolo