Photography
- Shanghai skyline. Photo by Edward He on Unsplash.
- New York, Statue of Liberty. Photo by Barth Bailey on Unsplash.
Historical material on the Roots page
- Dopplr 2008 Personal Annual Report for Barack Obama (two images). Source: Dopplr on Flickr (second image), licensed CC BY-SA 2.0. Changes: converted to WebP and recompressed; content unaltered.
- dopplr.com homepage, May 2009. Restored from the Internet Archive's Wayback Machine; the header photograph on the original page is credited to Alex Deschamps-Sonsino.
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