ubikuity/List-of-neighboring-states-for-each-US-state — pull request #2 by henryiii (2013-11-06 16:50:05+00:00)
Title: Adding entry date to allow ordering by date. Used ISO-8601 format.

I haven't checked the SQL statements to make sure they still work, but they should. I'm using python + pandas. This is handy for ordering states.