We went to Chicago last week and stopped by my favorite ivy-covered place there, Graphic Chemical Supply!I just needed paper, but they have everything a printmaker needs. It is a fascinating environment; every space on the wall is covered with prints, presumably made by customers. Here is the link: http://www.graphicchemical.com/.
The website also has a blog with printmaking advice and discussion.
Yes, we went to Wrigley Field, too. Go Cubs!