This ad was printed in the Stockholm paper Dagens Nyheter in the spring of 1975. I was only 11 at the time and I was pretty sure this family were looking for someone older with more experience....
The ad reads in English:
Nanny or Manny
Preferrably over 18 years old, for Linda 2 years old. Lighter house keeping, flexible working hours. Private room with separate entrance.
Agneta Fältskog och Björn Ulvaeus
Please call 63 03 10 during office hours and ask for Görel Johnson.