Residency of SoPaDe in Prague
In May 1933 leading members of the Social Democrats fled via Saarbrücken to Czechoslovakia, thus escaping Nazi persecution. In Prague they formed an exile organisation of the SPD called SoPaDe. From Prague, it organised the smuggling of files out of Germany, and gathered information on the political situation there. It was aided in this by a system of border branch offices, distributed along the Czech border area.