OpenHistoricalMap is a collection of open geospatial data. Except where otherwise noted, OpenHistoricalMap data is dedicated to the public domain under a Creative Commons CC0 dedication. To the extent that what you use is in the public domain, you are free to copy, distribute, transmit, and adapt it for any purpose, without any restrictions.

The OpenHistoricalMap database incorporates some individual map features under copyright. These features are available under an open license, such as Creative Commons Attribution (CC BY) or Creative Commons Attribution-ShareAlike (CC BY-SA), as noted in license=* tags on individual elements. To the extent that you use any significant portion of the database that is covered by a “share alike” license, you should respect the terms of this license in your own adaptation.

The map styles featured on our homepage are dedicated to the public domain under a CC0 dedication. You are free to copy, distribute, transmit, and adapt them for any purpose, without any restrictions.

Our documentation is licensed under the Creative Commons Attribution-ShareAlike 2.0 license (CC BY-SA 2.0).

Sut i gydnabod OpenStreetMap

Pan fyddwch yn defnyddio data OpenStreetMap, mae rhaid i chi wneud y ddau beth canlynol:

You may present this acknowledgment in any reasonable manner. For example, on a digital map, you can mention OpenHistoricalMap in fine print in the corner, linking to dudalen hawlfraint hon or our homepage:

Or you can include a clearer acknowledgment on a separate credits page where you credit other sources:

Map data courtesy of the OpenHistoricalMap project, in the public domain unless otherwise noted.

On a print map, you can place the acknowledgement in the legend. In a book, you can describe your use of OpenHistoricalMap in a footnote, bibliography, or colophon. In an academic paper, you can cite us in various manners depending on what you used.

Dysgu rhagor

Learn more about the legal considerations when using our data, and how to credit us, on the OpenStreetMap Wiki.

Ein cyfranwyr

Mae ein cyfranwyr yn filoedd o unigolion. Rydym hefyd yn cynnwys data sydd wedi'i drwyddedu'n agored gan asiantaethau mapio cenedlaethol a ffynonellau eraill, gan gynnwys:

• Data about coastlines, bodies of water, and streams © OpenStreetMap contributors, CC BY-SA 2.0.
• Data from the Atlas of Historical County Boundaries, a project of the William M. Scholl Center for American History and Culture at The Newberry Library, which is available for reuse without restriction.
• Data created by the ANR COMMUNES project in collaboration with The Cambridge Group for the History of Population and Social Structures.
• Additional sources and contributors are available on the OpenStreetMap Wiki.

The map styles featured on the homepage contain OpenHistoricalMap data and the following sources:

• Natural Earth datasets in the public domain.
• Land cover from GlobCover, © ESA 2010 and UCLouvain, available for reuse for educational and/or scientific purposes with attribution.
• Terrain elevation data from Danielson, J.J., and Gesch, D.B., 2011, Global multi-resolution terrain elevation data 2010 (GMTED2010): U.S. Geological Survey Open-File Report 2011–1073, 26 p. Public domain.

Nid yw cynnwys data yn OpenStreetMap yn awgrymu bod y darparwr data gwreiddiol yn cefnogi OpenStreetMap, yn darparu unrhyw warant, neu yn derbyn unrhyw atebolrwydd.

Toriadau hawlfraint

Hoffem atgofio cyfranwyr OSM i beidio ag ychwanegu data o unrhyw ffynonellau hawlfreintiedig (e.e. Google Maps neu fapiau print) heb ganiatâd penodol gan ddeiliaid yr hawlfraint.

If you believe that copyrighted material has been inappropriately added to the OpenHistoricalMap database or this site, please contact the OpenHistoricalMap team with "TAKEDOWN REQUEST" in the subject line.

Nodau Masnach

If you have questions about your use of the OpenHistoricalMap name, please contact the OpenHistoricalMap team.