Rhif Archif
6177180
Disgrifiad
Drawn plan of Trevivian planned town, produced for RCAHMW publication "Copperopolis", p.207, fig. 227.
Enw Casgliad
COP - RCAHMW Copperopolis Publication
Cyfrwng
Graphic.
Cychwynnwr
John W. Johnston, RCAHMW
Dyddiad
2000