New Year's Resolution for 2017: Make a D3 Block a day to teach myself D3. This is Number 17. This example returns to the USA district map using an improved set of shape files that highlight the states as well as the districts. The visualization shows Alaska and Hawaii in the lower left using the geoAlbersUsa projection. The topoJSON files used to construct this visualization were created by me using shape files compiled by the NCES and the United States Census Bureau. The Center for Assessment makes these state and national school district topoJSON files available for anyone to use in their own development.