BACKPROP SF offline map pack

Vector map data: OpenStreetMap contributors, ODbL.
Vector schema and design: OpenMapTiles, BSD 3-Clause / CC BY 4.0.
Style, sprites, and glyph service assets: OpenFreeMap.
Terrain tiles produced with Mapzen/Joerd.
San Francisco 3DEP terrain data courtesy of the U.S. Geological Survey.

Sources and full bundled-project license notes:
https://www.openstreetmap.org/copyright
https://openfreemap.org/
https://github.com/tilezen/joerd/blob/master/docs/attribution.md