Jaume Sanchez and his "Blocky Earth" for giving me the idea that elevations are obtainable and you can do reverse Mercator projections.
And also to Bjorn Sandvik and his tutorial at Textural terrains with three.js.
And to meetar.
In particular, Danni's post on the Canvas tag and Three.js really helped.
See also and in particular FGx on GitHub which has been the cause and the impetus for this work - as well as the links on the Technics page.
None of this would be possible without GitHub and its amazing pages facility.
Thank you Open Street Map, Google Maps, Open Cycle Map, Stamen Design and many others for making your map images freely available.
Thank you Khronos Group and Ken Russell of Google for WebGL,
And to Learning WebGL and the San Francisco WebGL Developers Meetup.
Thank you Mr.doob for Three.js
In preparing this data much use has been made of GDAL and Image Magick. Thank you for the useful tools.
Steven Horner's GeoJSON data sourced from stevenhorner / PeakVisibility
Gazetter Data from Latitude and Longitude for Selected Cities
Previously used sources for the height maps for levels 0 to 4 include:
CleanTOPO2.
The license is: 'You are welcome to use the contents of this site for personal use.' Thank you.
Global Tectonics GTOPO30 Topography On-Line Map Construction Tool.
And without Jonathan de Ferranti's data on Viewfinder Panoramas the world would still be flat...