An official website of the United States government.

The .gov means it’s official.
Federal government websites always use a .gov or .mil domain. Before sharing sensitive information online, make sure you’re on a .gov or .mil site by inspecting your browser’s address (or “location”) bar.

This site is also protected by an SSL (Secure Sockets Layer) certificate that’s been signed by the U.S. government. The https:// means all transmitted data is encrypted — in other words, any information or browsing history that you provide is transmitted securely.

Photograph of sterile flies packaged in paper bags for aerial release

Image (illustration or photograph) for this item, linking to higher res image.

Citation

Agricultural Research Service, United States Department of Agriculture. “Photograph of sterile flies packaged in paper bags for aerial release.” Special Collections, USDA National Agricultural Library. Accessed January 19, 2026, https://www.nal.usda.gov/exhibits/speccoll/items/show/6998.