I take many of my own photos. I've purchased a license to use other photos on this website. For copyrighted work made available through a creative commons license (version 1, version 2) the attribution is either in a caption directly under the photo where it first appears on the website or shown below. Unless noted, no changes were made; however photos may not be fully displayed or, in the case of banners, may be displayed with a topic word overlay due to the website theme and/or different website browsers or devices. Professional author photos are by Carrie Chang.