Photograph taken in April 1964 by Jeremy J. Shapiro at the Max Weber-Soziologentag. Horkheimer is front left, Adorno front right, and Habermas is in the
Cropped from File:AdornoHorkheimerHabermasbyJeremyJShapiro2.png (photograph taken in April 1964 at the Max Weber-Soziologentag). Author Jeremy J. Shapiro