Thanks to Richard Godley for forwarding these 'Local studies of the rural cutlers from around the Parishes of Ecclesfield and Bradfield and the Dyson family connections'. The documents can be downloaded by clicking on the links below:

Shotnell Farm

Dyson Family of Cutlers (A Century of Pocket Knife Manufacture Begun About 1728
By Michael Dyson)

The Sad Case of Esther Dyson