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.
Caricature: A man is painting a door using a small brush and a painter's palette; an old man is standing behind the painter, with one hand on his shoulder and pointing to a spot on the door.
Copyright:
The National Library of Medicine believes this item to be in the public domain. (More information)