Using Elk for Mapping
Comprehensive video courtesy of the Penn State Digital Beehive
Links mentioned in the video are below as well as other helpful links that aggregate city wide GIS info and lists the open street map features that can be referred to using the Elk plugin.
www.openstreetmaps.org - for exporting street and road data
http://dds.cr.usgs.gov/srtm/version2_1/SRTM1/ - for getting topography information
http://metro.teczno.com/ - gis data for most major metropolitan areas