|Note_en=Bimonthly catalog of ''Cancelleria "Ferretti"''. Year I, N. 4. Page 20. Showing some stationery items with [[Johan Faber]] pencils. | |Note_en=Bimonthly catalog of ''Cancelleria "Ferretti"''. Year I, N. 4. Page 20. Showing some stationery items with [[Johan Faber]] pencils. |