<p style="font-size: 12px;color:#aaa;">版权引用：<a href="https://avopix.com/photo/394056-angels-camp-california-s-most-famous-gold-rush-town-thanks-to-writer-and-humorist-mark-twain-original-image-from-carol-m-highsmith-rsquo-s-america-library-of-congress-collection"><span style="font-size: 12px;color:black;">“Angels Camp, California's most famous Gold Rush town, thanks to writer and humorist Mark Twain. Original image from Carol M. Highsmiths America, Library of Congress collection.”</span> </a>由 <a href="https://avopix.com/author/photos/carol-m-highsmith"><span style="font-size: 12px;color:black;">Carol M Highsmith</span></a> 授权许可 <span><a href="https://creativecommons.org/publicdomain/zero/1.0/deed.zh" target="_blank" style="font-size: 12px;color:black;">CC0 1.0 Universal Public Domain Dedication<img src="" style="display: inline-block;height: 16px;width: auto;"></a></span></p>