REMOVE

1. Cobalt blue, opaque white, a …
2. North American; American
3. 1870
4. c. 1865

WHAT

1. Cobalt blue, opaque white … (1)
2. Decorative Arts and Utili … (1)
3. Glass (1)

WHERE

1. North American; American (1)
2. North and Central America … (1)

WHO

1. Boston & Sandwich Glass C … (1)
2. The Art Institute of Chic … (1)

WHEN

1. 1860 (1)
2. American; 1826-1888 North … (1)
3. c. 1865 (1)