William L. Gannon

Field Notes: Costa Rica 1989

Field Notes: New Mexico 1992

Field Notes: Twin Bridges 1995

Field Notes: Maps, Permits and Documentation

Catalog: 1989 - 1991

 New Mexico, Alaska, Costa Rica, Rio Grande Zoo

Catalog: 1991 - 1992

 New Mexico

Catalog: 1992 - 1995

 Mexico, New Mexico, Utah, Texas, California