Question: A finger wave is a method of setting hair into waves (curls) that was popular in the 1920s and 1930s and again in the late 1990s in North America and which continent, Silver screen actresses such as who, she was an entertainer, activist, and French Resistance agent?

Context articles: Mathilde Carré
Silver screen
Condensed Classics with Dave Shaw
Marcelling
Finger wave
Lola Iturbe
René Carmille
Hairstyle
Silver Screen Classics
Josephine Baker

Mathilde Carré (30 June 1908 – 30 May 2007), known as "La Chatte", was a French Resistance agent during World War II who turned double agent.
A silver screen, also known as a silver lenticular screen, is a type of projection screen that was popular in the early years of the motion picture industry and passed into popular usage as a metonym for the cinema industry.
 The term silver screen comes from the actual silver (or similarly reflective aluminium) content embedded in the material that made up the screen's highly reflective surface.
Condensed Classics (also known as Condensed Classics with Dave Shaw) was a television show that aired on the Canadian Channel Movieola.
 Although only 25 episodes were produced, the show was run and rerun on Movieola, and later on its sister station Silver Screen Classics.
 The program was aired as late as April 2013 on "Silver Screen Classics", usually late on Saturday nights.
Marcelling is a hair styling technique in which hot curling tongs are used to induce a curl into the hair.
 Its appearance was similar to that of a finger wave, but made by a quite different means.
A finger wave is a method of setting hair into waves (curls) that was popular in the 1920s and 1930s and again in the late 1990s in North America and Europe.
 Silver screen actresses such as Bette Davis or Anita Page, and singer/dancer Josephine Baker are attributed with the original popularity of finger waves.
 In their return in the 1990s, the style was popularized by Hip Hop stars of the time, specifically Missy Elliot.
 The popularity of finger waves in the 1990s was aided by a movement toward shorter, more natural hair in the African-American community.
Lola (Dolores) Iturbe (Barcelona, 1 August 1902 – Gijón, 5 January 1990) was a prominent Spanish anarcho-syndicalist, trade unionist, activist, and journalist during the Second Spanish Republic, and a member of the French Resistance during the Battle of France.
 Working as a maid since childhood, she was self-taught.
 Iturbe was a member of the Confederación Nacional del Trabajo (CNT).
 In 1921 she was joined by the anarchist Juan Manuel Molina.
 She was one of the founders of the anarcho-feminist movement, "Mujeres Libres" and of the Comité de Milicias Antifascistas during the Spanish Civil War.
 She chronicled the war for "Tierra y Libertad" from the Aragón front.
 At the end of the conflict, she was exiled in France with her companion, Juan Manuel Molina Mateo, "Juanel", a former secretary-general of the Federación Anarquista Ibérica.
 Together, they formed part of the French Resistance.
René Carmille (born Trémolat, Dordogne, 1886; died Dachau, Bavaria, 25 January 1945) was a punched card computer expert and comptroller general of the French Army in the early 20th century.
 In World War II he was a double agent for the French Resistance and part of the Marco Polo Network.
 He ran the Demographics Department ("Service de la démographie") of Vichy which soon through a merger with the SGF (General Statistics of France) became the new National Statistics Service, which he continued to head up.
 In this capacity, he sabotaged the Nazi census of France, saving untold numbers of Jewish people from death camps.
 The IEEE newspaper, "The Institute", describes Carmille as being an early ethical hacker: "Over the course of two years, Carmille and his group purposely delayed the process by mishandling the punch cards.
 He also hacked his own machines, reprogramming them so that they’d never punch information from Column 11 [which indicated religion] onto any census card."
 He also used his department to help mobilize French resistance in Algeria.
A hairstyle, hairdo, or haircut refers to the styling of hair, usually on the human scalp.
 Sometimes, this could also mean an editing of beard hair.
 The fashioning of hair can be considered an aspect of personal grooming, fashion, and cosmetics, although practical, cultural, and popular considerations also influence some hairstyles.
 The oldest known depiction of hair braiding dates back about 30,000 years.
 In ancient civilizations, women's hair was often elaborately and carefully dressed in special ways.
 In Imperial Rome, women wore their hair in complicated styles.
 From the time of the Roman Empire until the Middle Ages, most women grew their hair as long as it would naturally grow.
 During the Roman Empire as well as in the 16th century in the western world, women began to wear their hair in extremely ornate styles.
 In the later half of the 15th century and on into the 16th century a very high hairline on the forehead was considered attractive.
 During the 15th and 16th centuries, European men wore their hair cropped no longer than shoulder-length.
 In the early 17th century male hairstyles grew longer, with waves or curls being considered desirable.
Silver Screen Classics is a Canadian English language Category B specialty channel owned by Channel Zero Inc. Silver Screen Classics broadcasts films primarily from the 1930s to the 1960s; including feature films, silent films, serials, shorts, and more.
Josephine Baker (born Freda Josephine McDonald; 3 June 1906 – 12 April 1975) was an entertainer, activist, and French Resistance agent.
 Her career was centered primarily in Europe, mostly in her adopted France.
 During her early career she was renowned as a dancer, and was among the most celebrated performers to headline the revues of the Folies Bergère in Paris.
 Her performance in the revue "Un Vent de Folie" in 1927 caused a sensation in Paris.
 Her costume, consisting of only a girdle of bananas, became her most iconic image and a symbol of the Jazz Age and the 1920s.