What does "Dust Bowl Refugee" by Woody Guthrie mean?

The song is pretty self-explanatory. If you don't understand, it is because you do not know the history. Why don't you look up Oklahoma dust bowl on wikipedia and/or google and read the history. That way you will understand for yourself what happened during the great depression when all the people who were living in the dust bowl migrated from Oklahoma, Arkansas and Tennessee to the west to find work or, you could rent the movie Gs Of Wrath with Henry Fonda to understand it It's from a book of the same name by John Steinbeck.. It's great to know things because you have done the research yourself.