NSVO 'Het Hartvuur Heilig' Lyrics Flyer. The National Socialist Women's Organization (NSVO) was the name under which NSB women between 1938 and 1945 could actively take part in the development and expansion of Dutch National Socialism. The Dutch "Nationaal-Socialistische Beweging" (National Socialist Movement) was founded by 'Anton Mussert' in December 1931 and was a Dutch pro-German Nazi Party. The large sized lyrics sheet measures approximately 32 x 24,5 cms and shows the NSVO logo on front, inside the song text. It is in used and slightly wrinkeled condition. Decorative original item!