{"value"=>"<p>Papers including event announcements, membership documents, and solicitations for talks documenting Leopold Katscher's and, to a lesser degree, Berta Katscher's involvement in various professional and non-professional organizations. Includes those in which they were active, held membership or office, and those which Leopold Katscher founded or proposed. Societies include peace societies, literary and artistic societies, feminist societies, social reform societies, Jewish societies, and others.</p>"}