Maps Streets Data comes from OpenStreetMap and Natural Earth, both of which are open data sets. The data is updated twice a month on ThinkGeo servers keep with the latest data available. Generally speaking, Natural Earth is used at lower zoom levels, and OpenStreetMap is serving for higher zoom levels.

• OpenStreetMap

  Open Street Map is built by a community of mappers that contribute and maintain data pertaining to roads, trails, cafés, railway stations, and much more, all over the world. OpenStreetMap's community is diverse, passionate, and growing every day. It's open data ao you are free to use it for any purpose as long as you credit OpenStreetMap and its contributors.

• Natural Earth

  Natural Earth is a public domain map dataset available at 1:10 million (1 cm = 100 km), 1:50 million, and 1:110 million map scales. Featuring closely integrated vector and raster data, with Natural Earth one can make a variety of maps with all commonly used cartography and GIS software. Natural Earth is designed to meet the needs of experienced cartographers using a variety of software applications.

  Natural Earth was built through a collaboration of many volunteers and is supported by the North American Cartographic Information Society(NACIS). It is free for public use in any type of project.

The data are scheduled to be updated every other week.

• The SQLite version can be used in all versions of ThinkGeo UI components. Here is a sample using WinForms edition to render the WorldStreets file in Sqlite. The sample data is included.
• The mbtiles version works with ThinkGeo Map Suite 10.5 or newer.

NAIP Image: A baseball Field

LandSat: