Historical information

The National School Slate Co. was started in 1847 and was a world importer of slate. They made chalk boards and pencils in Slatington, Pennsylvania

Physical description

Two slate boards. The slate, commonly used in schools, is housed in a timber frame and was used for drawing and writing with a special slate pencil.
(.1) lines marked on slate.

Inscriptions & markings

.1) has 'Mary Cook' written on top in pencil