Looking for logging into the Mountain Lion site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Mountain Lion site. After that you can login as usual with your login credentials.
https://www.apple.com/it/shop/product/D6377ZM/A/os-x-mountain-lion
https://www.askvg.com/download-mac-os-x-mountain-lion-look-like-login-screen-for-windows-xp/
https://apple.stackexchange.com/questions/181364/cant-login-to-mac-app-store
https://www.redmondpie.com/how-to-get-os-x-mountain-lion-login-screen-on-windows/
http://osxdaily.com/2011/12/02/change-login-screen-wallpaper-os-x-lion/
http://osxdaily.com/2011/10/13/disable-guest-user-account-mac-os-x-10-7-2-login-screen/
https://www.dummies.com/computers/macs/mac-operating-systems/automatic-login-in-os-x-mountain-lion/
https://www.cultofmac.com/209613/how-to-reset-a-lost-user-password-in-lion-or-mountain-lion-os-x-tips/
https://it.wikipedia.org/wiki/OS_X_Mountain_Lion
https://www.insanelymac.com/forum/topic/276996-change-mountain-lion-login-background/
https://superuser.com/questions/461288/how-to-mount-encfs-at-login-on-os-x-mountain-lion
https://books.google.it/books?id=6vjvhNp1QIEC&pg=PT520&lpg=PT520&dq=mountain+lion+login
https://www.independent.co.uk/news/world/americas/firefighters-rescue-mountain-lion-stuck-tree-california-video-a8785116.html