Valant — PPS: Firefox ESR Version 52 for Windows OS
Mozilla Firefox, Portable Edition Legacy 52 (customizable web browser) | PortableApps.com
Firefox 52 Borrows One More Privacy Feature from the Tor Browser
Firefox 52: how to keep on using plugins - gHacks Tech News
New Firefox Beta Released With New User Interface, New Core Engine
Mozilla Firefox 52 Released [How-to-upgrade] - Tips on Ubuntu
When I try to download Firefox ESR 52 version I still get the download of version 60. | Firefox for Enterprise Support Forum | Mozilla Support
Download Historical Versions of Firefox
Firefox 52 Allows Games to Run Faster Than Ever | PCMag
Mozilla Firefox 52 now available | Linux Addicts
Firefox ESR release cycle | Firefox for Enterprise Help
Mozilla Firefox 52.9.0esr and 53.0.3 running on Windows 2000 - BetaArchive
The final browser for Windows XP / XP x64: Firefox 52.0 ESR (And: Electrolysis / e10s multiprocessing support) – The GAT at XIN.at
Mozilla Turning TLS 1.3 On By Default With Firefox 52 | Threatpost
Firefox 52, the last version of Firefox rolls out to Windows XP and Vista
GitHub - TarekJor/Firefox-52-ESR-legacy-addon: [WIP] A curated list and XPI files of Mozilla Firefox browser extensions, addons, themes from addons. mozilla.org, before XUL-based purge blackout
Firefox 52 Released With WebAssembly Support, Removes NPAPI Plugins Other Than Flash (Java, Silverlight) ~ Web Upd8: Ubuntu / Linux blog