A German lawyer and politician, Erich Eyck was the author of a number of German language histories and biographies, several of which were translated into English.
Eyck's excellent political history of the Weimar Republic continues in this second volume. It covers the era from Locarno to the Nazi control of the government. In particular, this volume is worth reading because of the description of the activities of the one and only centrist with influence in Weimar, Gustav Stresemann, a much forgotten and neglected figure these days. The volumes of this history are translated by Harlan Hanson and Robert G. L. Waite. I don't know much about Hanson, but Waite was an American whose histories of Nazi Germany were influential in the 1970s. He became an advocate for psychohistory.