Aside from the program itself, the following sites serve as reference sources for all of Photoshop Wiki:
- GUIdebook—Graphical User Interface Gallery Photoshop GUIs
- Gizmodo.com, "The Definitive Photoshop Timeline", Jesus Diaz
- Story Photography, "History of Photoshop", Derrick Story
Community content is available under CC-BY-SA unless otherwise noted.