1. J. & P. Coats' best six cord spool cotton. Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: [ca. 1870–1900] Institution: Boston Public Library
2. He can't break it George, it's Merrick's best six cord thread. Best in the world. Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: [ca. 1870–1900] Institution: Boston Public Library
3. Clark's O.N.T. Spool Cotton. "I reckon dis yere's strong 'nuff suah." Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: [ca. 1870–1900] Institution: Boston Public Library
4. Brook's spool cotton. Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: [ca. 1870–1900] Institution: Boston Public Library
5. Choose the best shade. J & P. Coats' thread Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: (c) 1881 Institution: Boston Public Library
6. Clark's Mile End Spool Cotton Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: [ca. 1870–1900] Institution: Boston Public Library
7. Clark's Mile-End Spool Cotton Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: [ca. 1870–1900] Institution: Boston Public Library
8. Clark's O. N. T. Spool Cotton Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: (c) 1878 Institution: Boston Public Library
9. Clarks O.N.T. Spool Cotton. George A. Clark, sole agent, Clark's best six cord, 200 yards, warrd. 40. Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: (c) 1878 Institution: Boston Public Library
10. Clarks O.N.T. Spool Cotton. George A. Clark, sole agent, Clark's best six cord, 200 yards, warrd. 40. Format: Postcards/Cards Collection: 19th Century American Trade Cards Date: (c) 1878 Institution: Boston Public Library