Roland Flexner (www.rolandflexner.com) was one of the artists displayed. Curiously I wrote down a series of small works by him were gouache on paper thinking, "Wow, that doesn't look like gouache." And, indeed, it seems to be graphite (liquid graphite). Regardless, they are lovely pieces (all untitled). The photos here do not do his work justice and you should have a look at them at the gallery or artist websites. Flexner will be part of an exhibit at the Indianapolis Museum of Art in December, 2012.
Another artist is one that I have admired since first seeing his work, Alex Katz. The piece below, Beige Ada, was shown at Expo Chicago. Katz, a native of Brooklyn, had his first show in 1954 and has had numerous solo shows, group shows and retrospectives. For more on Katz head to www.alexkatz.com.
His work is so clean and deceptively "simple." But when you walk across the room and look back at his paintings they change. It isn't that they come to life at a distance--they have that close up as well. They just, well, change. They have a new life.