I've written a short piece (three pages) on life as a teenager in Sweden in the 80's. If there's need for additional info, I can translate it, but not before we see what's included in the rulebook. It is mostly about how school, media, and tech affected our lives.
I think a fun sourcebook would be a school yearbook. There could be dozens of little story hooks, notes from students, information about clubs, sports teams and bizarre going ons in the year before the game takes place. Having an actual, physical copy would give the players something to flip through as the adventures get played out (much in the way Kenneth Hite's "Dracula Dossier" works in Trail of Cthulhu). So to that I say, keep writing, Björn. It will be useful for someone.
Alas, school yearbooks aren't the same in Sweden as in the US. They are just books with photos of the classes (and any societies), with little or no additional info. I'm hard pressed to think of a suitable "period" format to use.
Here's the paragraph I've written on schools (quick and dirty Google translate):
"School was nine years, beginning the year you turned seven, and there was usually better order in the classrooms than now. If you did not live in an area with an immigrant population, it wasn't unusual that the classes were almost completely ethnically Swedish, possibly with a classmate with parents from Finland or Yugoslavia, or one parent from e.g. Poland, or adopted from South Korea. The grading scale was from 1-5, with 5 as the highest grade. One was a bookworm if one averaged about 4 or better (phys ed didn't need to be counted). In math classes, you could use a calculator, but back then not everyone owned one, so there was usually a set available to borrow. In the early 80's, computers were introduced in secondary schools and high school, usually the ABC 80 from Luxor. On these wonders with 16 KB ROM (yes, kilobytes!), a generation of computer geeks learned to program in BASIC." (c) Björn Hellqvist 2016
My life fades. The vision dims. All that remains are memories. I remember a time of chaos, ruined dreams, this wasted land.