Here are the most popular individual pages in the old documentation as measured by page views in 2017 to date:

1. https://docs-old.fedoraproject.org/en-US/Fedora/19/html/Security_Guide/sec-O... 2. https://docs-old.fedoraproject.org/en-US/Fedora/11/html/Security-Enhanced_Li... 3. https://docs-old.fedoraproject.org/en-US/Fedora/23/html/System_Administrator... 4. https://docs-old.fedoraproject.org/en-US/Fedora/25/html/Installation_Guide/s... 5. https://docs-old.fedoraproject.org/en-US/Fedora/25/html/Installation_Guide/s... 6. https://docs-old.fedoraproject.org/en-US/Fedora/13/html/Virtualization_Guide... 7. https://docs-old.fedoraproject.org/en-US/Fedora/25/html/Installation_Guide/s... 8. https://docs-old.fedoraproject.org/en-US/Fedora/19/html/Security_Guide/sec-D... 9. https://docs-old.fedoraproject.org/ru-RU/Fedora/12/html/Virtualization_Guide... 10. https://docs-old.fedoraproject.org/en-US/Fedora/25/html/Installation_Guide/s...

I've left off whole chapter or guide links -- this is just when someone happens to land on a specific section.

Yes, #9 is the same as #6, but in Russian. If we skip that one, the next up is https://docs-old.fedoraproject.org/en-US/Fedora_Draft_Documentation/0.1/html...

Also, for what it's worth, the next non-English document that is popular is https://docs-old.fedoraproject.org/ru-RU/Fedora/13/html/Security-Enhanced_Li... followed much down the list by https://docs-old.fedoraproject.org/es-ES/Fedora/13/html/Security-Enhanced_Li...