Collection place
- 1/2 mile east of lake outlet, Laguna Catemaco, Veracruz1 objects
- 1/2 mile from Rio Catanuco, Matacapan, Veracruz, Mexico1 objects
- 2.7 miles north of CA-Mod-214, Modoc County, California1 objects
- 5 miles east of Catemaco on road to Montepillo, Veracruz, Mexico2 objects
- Acropolis, Tarquinia, Central Italy11 objects
- Aegean Islands, Greece25 objects
- Afognak Island, Kodiak Island Borough, Alaska7 objects
- Africa33 objects
- Agua Blanca, Jutiapa, Guatemala93 objects
- Alameda County, California24 objects
- Alaska200 objects
- Anaktuvuk Pass, Brooks Range, North Slope Borough1 objects
- Ancón DIstrict, Lima Region, Central Peru3 objects
- Arden-Arcade (CDP), Sacramento County, California3 objects
- Arizona15 objects
- Arizpe Municipality, Sonora, Mexico1 objects
- Arizpe, Arizpe municipality, Sonora, Mexico1 objects
- Arroyo Sonso, Veracruz, Mexico1 objects
- Bakersfield, Kern County, California7 objects
- Barro area, Napa Valley, Napa County260 objects