Recently, the twitter account @HistOpinion shared this chart showing results from a 1938 poll:
US Jul ’38: What’s your attitude towards allowing German, Austrian & other political refugees to come into the US? pic.twitter.com/7hMfLbXWFE
— Historical Opinion (@HistOpinion) November 16, 2015
And this one from a 1939 poll, after Kristallnacht:
The charts are historically relevant at a time when Republican governors have made statements against accepting Syrian refugees. The Washington Post provided more context for the polls and their significance, then and now, in an article here.