This image is a work of an employee of the Architect of the Capitol, taken or made as part of that person's official duties. As a work of the U.S. federal government, all images created or made by the Architect of the Capitol are in the public domain in the United States.
这幅图片原始出处为Flickr的https://flickr.com/photos/65191584@N07/9343368268 ,作者为USCapitol 。经机器人FlickreviewR在2015年7月31日审查后确定为采用United States Government Work的协议授权使用。