| Member | Start Date | End Date | Status | Volume/Issue |
|---|---|---|---|---|
| William Cowper Robertson | Sep 20, 1930 | Sep 20, 1930 | Purchase | - |
Prometheus
| Member | Start Date | End Date | Status | Volume/Issue |
|---|---|---|---|---|
| William Cowper Robertson | Sep 20, 1930 | Sep 20, 1930 | Purchase | - |