Amtrak system map (approximate) after the Carter cuts of October 1, 1979. Some inaccuracies may be present due to last-minute changes.
Amtrak
<a rel="nofollow" class="external text" href="http://history.amtrak.com/archives/i-amtrak-news-i-september-1979">Amtrak NEWS, September 1979</a>