| Category | History, distribution and uses |
| Subject | Nursery trees/seeds |
| Title | Ad for Armstrong Nurseries |
| Description | Ad for the Armstrong Nurseries in Ontario, CA for avocados. Taken from the California Avocado Assocation Yearbook in 1931. |
| Location | California |
| Date | 1931 |
| Source | California Avocado Association Yearbook |
| Larger Picture | 693 x 579 (43 kb) |
