Johann Baptist Isenring in Stuttgart, Anzeige in der Schwäbischen Chronik, Mai 1841, Johann Baptist Isenring, 31 May 1841
Advertisement by the traveling daguerreotypist johann baptist isenring in stuttgart. Simultaneous use of six cameras for several identical daguerreotypes. Advertisement in the “schwäbische chronik”, may 31, 1841, woodcut print. Date: 31 May 1841.