1. National transportation atlas database Publication/Creation: [Washington, D.C.] : U.S. Dept. of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, 2006- Resource Type: Journal, Newspaper or Serial Access & Availability: Loading
2. The background, criteria, and usage of the intermodal passenger connectivity database Author/Creator: Goldberg, Bruce, author Publication/Creation: [Washington, D.C.] : U.S. Department of Transportation, Research and Innovative Technology Administration, Bureau of Transportation Statistics, 2009 Resource Type: Book Access & Availability: Loading
3. National transportation atlas databases : NTAD Publication/Creation: [Washington, D.C.] : U.S. Dept. of Transportation, Bureau of Transportation Statistics Resource Type: Map Access & Availability: Loading