Official websites use .gov
A .gov website belongs to an official government organization in the United States.
Secure .gov websites use HTTPS
A lock () or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.
A topographer maps the north half of the Lovelock 1-degree quadrangle in the desert area near Jungo, Nevada. The umbrella protected the instrument from temperature variations.
Public Domain.
