REMOVE

1. Slate
2. Roxbury

WHAT

1. image-making equipment (7)
2. 5 slate chalkboards (5)
3. blackboard slate (5)
4. 4 slate pencils (2)

WHERE

1. Roxbury, Massachusetts (7)
2. UMass Archaeological Serv … (7)

WHEN

1. 18th-20th century (7)
2. 19th-20th century (7)
3. creation date (7)
4. 1844 (2)
5. 1910 (2)