History of the iPod: From the First iPod to iPod Classic
iPod - Wikiwand
What are the differences between the third generation iPod nano models? What are the differences between these models and the models they replaced?: EveryiPod.com
iPod Evolution through 2010 by kproductions on DeviantArt
iPod Generations Chart
Which iPod was the best designed/looked the best? | NeoGAF