Image:Usagraphfinal2.PNG

From Math Images

USA map taken from Wikipedia: http://en.wikipedia.org/wiki/File:Map_of_USA_with_state_names.svg

Image made by Brendan John using Mathematica. Source Code:

GraphPlot[{"AL" -> "FL", "AL" -> "GA", "AL" -> "MS", "AL" -> "TN",

 "AR" -> "LA", "AR" -> "MO", "AR" -> "MS", "AR" -> "OK", 
 "AR" -> "TN", "AR" -> "TX", "AZ" -> "CA", "AZ" -> "CO", 
 "AZ" -> "NM", "AZ" -> "NV", "AZ" -> "UT", "CA" -> "NV", 
 "CA" -> "OR", "CO" -> "KS", "CO" -> "NE", "CO" -> "NM", 
 "CO" -> "OK", "CO" -> "UT", "CO" -> "WY", "CT" -> "MA", 
 "CT" -> "NY", "CT" -> "RI", "DE" -> "MD", "DE" -> "NJ", 
 "DE" -> "PA", "FL" -> "GA", "GA" -> "NC", "GA" -> "SC", 
 "GA" -> "TN", "IA" -> "MN", "IA" -> "MO", "IA" -> "NE", 
 "IA" -> "SD", "IA" -> "WI", "ID" -> "MT", "ID" -> "NV", 
 "ID" -> "OR", "ID" -> "UT", "ID" -> "WA", "ID" -> "WY", 
 "IL" -> "IA", "IL" -> "IN", "IL" -> "KY", "IL" -> "MO", 
 "IL" -> "WI", "IN" -> "KY", "IN" -> "MI", "IN" -> "OH", 
 "KS" -> "MO", "KS" -> "NE", "KS" -> "OK", "KY" -> "MO", 
 "KY" -> "OH", "KY" -> "TN", "KY" -> "VA", "KY" -> "WV", 
 "LA" -> "MS", "LA" -> "TX", "MA" -> "NH", "MA" -> "NY", 
 "MA" -> "RI", "MA" -> "VT", "MD" -> "PA", "MD" -> "VA", 
 "MD" -> "WV", "ME" -> "NH", "MI" -> "OH", "MI" -> "WI", 
 "MN" -> "ND", "MN" -> "SD", "MN" -> "WI", "MO" -> "NE", 
 "MO" -> "OK", "MO" -> "TN", "MS" -> "TN", "MT" -> "ND", 
 "MT" -> "SD", "MT" -> "WY", "NC" -> "SC", "NC" -> "TN", 
 "NC" -> "VA", "ND" -> "SD", "NE" -> "SD", "NE" -> "WY", 
 "NH" -> "VT", "NJ" -> "NY", "NJ" -> "PA", "NM" -> "OK", 
 "NM" -> "TX", "NM" -> "UT", "NV" -> "OR", "NV" -> "UT", 
 "NY" -> "PA", "NY" -> "VT", "OH" -> "PA", "OH" -> "WV", 
 "OK" -> "TX", "OR" -> "WA", "PA" -> "WV", "SD" -> "WY", 
 "TN" -> "VA", "UT" -> "WY", "VA" -> "WV"}, VertexLabeling -> True]