from the worth-it-for-the-screenshots dept.
benwiggy writes "Photoshop turned 20 on 10th February 2010. Here's an excellent history, including how the Knoll family created one of the biggest apps of all time. The article also has screenshots of the workspace through the versions."
Never ask two questions in a business letter. The reply will discuss
the one you are least interested, and say nothing about the other.