Today, the Association of Public Data Users http://www.apdu.org/ <http://www.apdu.org/> hosted a webinar on a new (Jan 2010) website: http://www.censushardtocountmaps.org This project was funded by the "Funders Census Initiative." It takes the Census hard-to-count dataset and puts it into an interactive web-based GIS, where you can look at the Hard-to-Count (HTC) scores, and look at the individual components (there are 12 variables used in the HTC score). They used the CB's HTC dataset developed by Antonio Bruce and Greg Robinson. http://www.census.gov/procur/www/2010communications/tract%20level%20pdb% 20with%20census%202000%20data%2001-19-07.pdf The speaker, Steven Romalewski, from CUNY Mapaping Service, said they used ESRI for creating the map layers, and used Flash to display the maps. They use Google Maps as a background layer. The maps are cached tiles to make them faster to display. They hope to add the actual Census 2010 participation rates, and would like to see the addition of the 2010 Census results and update this web-GIS for use in redistricting. They would like people to use this interface to help target Census 2010 participation, and have given many presentations on this application to Complete Count groups and the media. Please take a look at this easy-to-use GIS interface, and please consider joining APDU. They have hosted a series of interesting webinars in the past year and the archived sessions are available only to APDU members. Elaine Murakami FHWA Office of Planning