Since its inception in 2009, the Dallas Art Fair, which opens today and runs through April 15, has more than doubled its size. The fair began with with 30 exhibitors and is now showing 75 national and international art dealers including some from New York, like Lisa Cooley, Untitled, Canada, Salomon Contemporary, Feature Inc. and Vladimir Restoin Roitfeld, among many others. Now in its fourth iteration, the Dallas Art Fair is giving Marfa stiff competition for attracting the globe-trotting movers and shakers in the contemporary arts scene. Here is a sample of some artwork on view at the fair.