Geological diagrams of Derbyshire strata which are made from Derbyshire minerals were once thought to have all been created by White Watson but it is now thought likely that some of these objects in Derby Museum were actually created by Mawe & Brown.
Diagram geologi dari strata Derbyshire yang dibuat dari mineral-mineral Derbyshire diperkirakan semua dibuat oleh White Watson namun saat ini juga ada perkiraan bahwa sebagian dari benda itu yang tersimpan di Museum Derby sebenarnya buatan Mawe & Brown.