1869. Birmingham Daily Gaz., 28 Oct., 4/6. By the new process, however, which is appropriately called ‘autotypy,’ the use of silver is dispensed with, and photographic impressions are produced in carbon, or some permanent pigment.
1869. Birmingham Daily Gaz., 28 Oct., 4/6. By the new process, however, which is appropriately called ‘autotypy,’ the use of silver is dispensed with, and photographic impressions are produced in carbon, or some permanent pigment.
