Online Resources
Carnegie Museum of Art
http://www.cmoa.org/searchcollections/ (Fully Elastic Armchair)
Flickr
http://www.flickr.com/photos/gwen/3292131838/ (Gragg chair snapshot)
The Huntington Library, Art Collections, and Botanical Gardens
http://emuseum.huntington.org/ ("Elastic" Side Chair)
James Madison University Library
http://www.lib.jmu.edu/ (1808 U.S. Patent for "elastic chair")
National Heritage Museum
http://nationalheritagemuseum.typepad.com/library_and_archives/ (Elastic Chairs)
Sotheby's
http://www.sothebys.com/ (Bentwood Side Chair)
St. Louis Art Museum
http://saintlouis.art.museum/emuseum/ (Elastic Side Chair)
Chipstone Foundation
http://www.chipstone.org/SpecialProjects/ (The Incredible Elastic Chairs of Samuel Gragg)