[1] On 29 November 1979 Viehoff became member of the European Parliament when she succeeded Anne Vondeling.

[2] For her first four years in the Parliament she was member of the Committee on Youth, Culture, Education, Information and Sport.

[3] During her time as MEP Viehoff was supportive of biotechnology as a socially steerable technology.

[5] In February 1989 Viehoff asked the European Commission whether it was going to discipline former Dutch Prime Minister Dries van Agt for comments he made regarding the Dutch delegation to the funeral of Japanese Emperor Dries van Agt.

[1] In the 1990s Viehoff was active in the Rooie Vrouwen in de PvdA (Red Women of the Labour Party) movement.