Some photographs on this site were made by other people and published under Creative Commons licenses. Those licenses allow us to use the work, including cropped and resized versions of it, as long as we credit the photographer and name the license. This page is that credit.
Where an image is marked CC BY-SA, our cropped version is itself offered under that same license. Every other photograph on the site — the trolleys, the interiors, the city pages — is our own.