- Marie-Maguerite Catusse (1858-1928) was one of the closest friends of Marcel Proust's mother Jeanne Weil and a friend and longtime correspondent of Marcel Proust. - The Musée social was founded to preserve documents from the Social Economy pavilion of the 1899 Exposition Universelle. Over the years, the well-funded institution became an important center of research into a broad range of topics, including social housing, labor organization, and city planning. Based on its expertise and important supporters and members, the Musée social gained great influence over government policy in the 1st half of the 20th century. - With a tear to a fold slightly affecting the text..