Emery (corundite) hasn't been used as an abrasive in the United States for over a 100 years. Just saying
Check Norton Abrasives. NortonCatalog-ClothSheetsRolls.pdf
They still offer cloth backed abrasive in Emery, Silicon Carbide and Aluminum Oxide.
Norton offers it in sheets not rolls.
According to their Cross Reference Table, 3M, Klingspor and SIA also have Emery products.