Reprocessing of magnetic data for Yukon was performed between November 2016 and March 2017. Aeromagnetic data were compiled, data of different resolutions were merged, and a series of images individually levelled for each map sheet were produced. For each 250k-scale map, the following magnetic derivative maps were produced: 1.Residual Total Magnetic Field; 2.Reduced-to-Pole Magnetic Field (RTP); 3.First Vertical Derivative of the Reduced-to-Pole Magnetic Field (RTP_VD); and 4.Tilt Derivative of the Reduced-to-Pole Magnetic Field (RTP_TDR). These maps are provided as pdfs, geotiffs and Geosoft grid files. Colour ramps/legends are provided for each map.