I Marginalen = In the margin.

Lars Johanssen was the host of this show.  Kåge Gimtell was the producer of the series.

Apart from the usual Harry Arnolds Orchestra, Marianne Wesén and Jarl Borssén, Frida and Claes-Göran Hederström took part in this final episode of I marginalen as detailed in this magazine cutting (the source of the cutting is unknown).

The pictures above are not necessarily from the TV broadcast.  You may find larger versions of the pictures here:

I Marginalen - picture 1
I Marginalen - picture 2

Click here for a TV listing from Arbeiderbladet - 8 August 1969, p.19.

Thanks to the ABBAF Fan Club Magazine, Evelyn Nuyens, Marcus B and Vicky De Groote.
Thanks to Malin Westerberg for clarification of the broadcast date.
Thanks to Jozsef.