Box of "Bisco Brand" copper bands
1901-1940
Selection of orthodontic tubing samples
1900-1914
Traction screw
1900-1914
Selection of jackscrews
1900-1914
Selection of jack screws
1900-1914
Boxed selection of screw wire for making dental crown posts
1900-1914
Cased set of anchor bands with extension screw-posts
1905-1920
Selection of jack screws
1900-1914
Selection of Barnes anchor bands in display case by the Blue Island -S pecialty Co.
1905-1914