Book: Double Trouble, and videos, and the hard way to get infos

This is a list of the videos and books (additional material) of Double Trouble (1984) but this is typical for almost all other series. The early series sometime also had vinyl and audio cassettes.

I wanted to find more infos especially of this and one more series. Videos and books are often very rare (except for the series still running), especially of the 1960s, 70s and 80s, so infos, pics and even some episode titles can't be found online (easily).

I now found more infos and even screenshots, an update of the series coming soon.

 

9783468903304 VHSx1 with all books. Price was ~140 DM then ~100 EUR 

9783468903328 Video 2000 Langenscheidt
9783468903311 Video Betamax

9780862702458 Working book (for students) 60 pages Vol 1

9780862702533 active viewing guide vol 2 , 27 pages

9780862703707 answer key, 13 pages

9780862702380 video transcript

9781852942991 (unknown, set?, foreign?)

Best next the videos is the workbook with 60 pages. Should be illustrated. Also infos in different magazines like Praxis Schulfernsehen.

Availability: (poor)

Shops: I found a shop via a meta bookshop site, who claimed that they can order all of them including vids but it wasn't true. The only available (used) copy of the workbook is at a Turkish store, but they obviously only ship within Turkey.

Libraries: The only alternative. Germany: I only found video and books in just one library, but you can't loan it, only use it there and must be member of that library/university.

International libraries: Research is often hard, especially with simple titles like Bridges. Even when having ISBN and authors (here: Lonergan (Jack), Neuman (Jocelyn) and Garpebring (Eskil)). Worlcat shows ~15 libraries, but half of them are different books (same ISBN) and the other half don't have them, although stated. One library in Hungary have video and books but don't borrow them.

Magazines: By coincidence, I read, that some teacher's stuff continued to be published in magazines, most notably Praxis Schulfernsehen. There are also other magazines, but most aren't digitized, so you don't know the exact issue, title and author. And there is 70s stuff in 90s issues. 

Research: Best research for this subject is fachportal-paedagogik, digibib and the OPAC (meta) servers (for magazines) like bonnus-ulb.uni-bonn. Some also include international libaries and even shops.

Some infos are also included in other, general books. But often you can't find contents in vintage books online. Google Books showing less and less. I haven't tried Scholar. Another way would be to ask teachers. At most forums someone has to register (and teachers only).