German Poster (IMAGE) University of Wisconsin-Madison Caption German educational and propaganda posters warned about the kartoffelkäfer -- potato beetle -- and tried to pin the invasion on Americans. Credit Andrei Alyokhin Usage Restrictions Credit to Andrei Anyokhin License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.