[2] Léopold Lacour assisted with the 1896 International Feminist Congress in Paris, presided over by Marie Bonnevial, which discussed coeducation.

[9] Léopold Lacour was a socialist and a feminist, believing that women deserved and must strive for a full and rich life without restrictions.

[10] Women in the late 19th century had to contend with the misogynist views of writers such as Alexandre Dumas, Émile Zola and Octave Mirbeau.

[11] These authors thought Lacour and others sympathetic to feminism such as Victor Margueritte and Jules Bois were traitors to their sex, calling them "les vaginards.

"[12] Klejman and Rochefort said that while Eliska Vincent created le féminisme historique, Léopold Lacour is without a doubt the first to undertake an historian's examination of feminism.