1. Soil sample Museum number: 1-37769 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 21, 1936
2. Soil sample Museum number: 1-37772 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 28, 1936
3. Soil sample Museum number: 1-37771.2 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 21, 1936
4. Soil sample Museum number: 1-37773.1 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 21, 1936
5. Soil sample Museum number: 1-37769.2 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 21, 1936
6. Soil sample Museum number: 1-37770 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 28, 1936
7. Soil sample Museum number: 1-37771.1 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 21, 1936
8. Soil sample Museum number: 1-37770.1 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 28, 1936
9. Soil sample Museum number: 1-37773.2 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 21, 1936
10. Soil sample Museum number: 1-37770.2 Object class: Soil samples Collector: Alex D. Krieger and Robert Fleming Heizer Collection place: CA-CCo-141, Palm Tract, Contra Costa County Collection date: March 28, 1936