This is an adaptation of the Toner map style from Stamen Maps.
Start at:
- http://maps.stamen.com/toner/
- https://github.com/stamen/mapbox-gl-toner
- https://github.com/stamen/toner-carto
For a browsable electronic map the copyright notice must appear in the corner of the map:
© MapTiler © OpenStreetMap contributors
For printed and static maps a similar attribution must be made in a textual description near the image, in the same fashion as if you cite a photograph.
Exceptions to attribution requirement can be in a written form granted by MapTiler AG (info@maptiler.com). The project contributors grant MapTiler AG the license to give such exceptions on a commercial basis.