Including Pook & Pook Inc., Northeast Auctions, Israel Sack Inc., Park-Bernet Galleries Inc., Sotheby's, Christie's New York, Kennedy Galleries Inc., Keno Auctions, Skinner Inc., American Art Association Anderson Galleries Inc., Chrisitie's East, Sotheby Park Bernet Inc., The Anderson Galleries, Jeffrey S. Evans & Associates, Richard A. Bourne Co. Inc. Estate Auctioneers and Appraisers, and American Glass Gallery.