Historical programming-language groups disappearing from Google

As Alex McDonald notes in thissupport request, Google has recently banned the old Usenet groupscomp.lang.forth and comp.lang.lisp from the Google Groups system."Of specific concern is the archive. These are some of the oldestgroups on Usenet, and the depth & breadth of the historical material thathas just disappeared from the internet, on two seminal programminglanguages, is huge and highly damaging. These are the history andcollective memories of two communities that are being expunged, and it'snot great, since there is no other comprehensive archive after Google'spurchase of Dejanews around 20 years ago."Perhaps Google can be convinced to restore the content, but it also seemsthat some of this material could benefit from a more stable archive.