The Common Ground Gallery Website Is Under Construction. For questions call: 212-989-4178 or email: thecommonground@att.net. We are located at 55 West 16th Street (between 5th & 6th avenue). We specialize in Native American Antique and Contemporary Tribal Arts. Please visit our other website: thecommonground.8m.net while our new site: thecommongroundgallery.com is under construction.