It is the curriculum and the syllabus for history that decides what the classbooks will include. The intention with this paper was to found out what Swedish and Norwegian classbooks writes about the union between Norway and Sweden in 1814-1905. The result has been compiled from a study with teaching materials. Two Norwegian and two Swedish books which was written for the elementary school was used in the study. The text in these books has been analysed from a number of questions. The results are showing that the Norwegian books are telling more about the union between Norway and Sweden than what the Swedish books are. The union era take up a lot of space in the Norwegian books, but the Swedish books are not giving the union era so much space. There is no confusion that the union between these two countries means different things for the countries. At the end of the union bacame Norway a sovereignty and the clearance of the constitution still celebrates every year in may 17. The pupils doesn´t receive enough knowledge to put it in a cohesion from the Swedish classbooks.