----------------------------Original message---------------------------- Help, please. I am dealing with the subject of magnetic declination and have been having a problem with some older US maps. Those that we have in our department are quite dated - usually the 1:24000, 1:62500, and 1:250000 series - some going back to the 1950s and 60s. On Canadian maps there is usually a statement such as "average annual magnetic chane 4' westerly" for example - that then makes figuring the contemporary position of mag north on the sheet rather easy....now the problem... I cannot find any such statement on the US maps. Are there look-up tables that have to be used, or am I missing something so obvious that it is about to make me feel really, really silly when I find out what it is...??? Thanks in advance. Ben Moffat Geography - Medicine Hat College Medicine Hat, Alberta