You may NOT use this image on your own web site or anywhere else unless you release this image and any derivative works (which may include the web page or other medium where this image is used, if it is not considered a "collective work") by following the terms of one of the following licenses. Any other use will be considered a breach of copyright law. Please do not copy this image illegally by ignoring the terms of the license, as it is not in the public domain.

If you would like special permission to use, license, or purchase the image or prints of the image, or for use in any other fashion, or would simply like a copy of the original file, please contact me or email me first to ask. Please see the non-legalese usage guide for more information.

Note: While you are not required to do so by the license, please consider letting me know when you reuse one of my photograph images, as a courtesy.

我，本作品著作权人，特此采用以下许可协议发表本作品：

已授权您依据自由软件基金会发行的无固定段落及封面封底文字（Invariant Sections, Front-Cover Texts, and Back-Cover Texts）的GNU自由文件许可协议1.2版的条款，复制、传播和／或修改本文件。该协议的副本请见“GNU Free Documentation License”。

仅1.2版http://www.gnu.org/licenses/old-licenses/fdl-1.2.htmlGFDL 1.2GNU Free Documentation License 1.2truetrue

本文件采用知识共享署名-相同方式共享 2.5 通用许可协议授权。

您可以自由地：

• 共享 – 复制、发行并传播本作品
• 修改 – 改编作品

惟须遵守下列条件：

• 署名 – 您必须对作品进行署名，提供授权条款的链接，并说明是否对原始内容进行了更改。您可以用任何合理的方式来署名，但不得以任何方式表明许可人认可您或您的使用。
• 相同方式共享 – 如果您再混合、转换或者基于本作品进行创作，您必须以与原先许可协议相同或相兼容的许可协议分发您贡献的作品。

https://creativecommons.org/licenses/by-sa/2.5CC BY-SA 2.5 Creative Commons Attribution-Share Alike 2.5 truetrue

您可以选择您需要的许可协议。

Image:Pittsburgh Union Station Rotunda 1876px.jpg - Rotunda