[2] The versatile entrepreneur, photographer and publisher of numbered postcards distributed his works produced in collotype under the name "L.
[4] In Paul Siedentopf's ...Buch der alten Firmen... (see further reading), next to the company logo "LH" in a square are the headings "Ludwig Hemmer, Graphische Kunstanstalt / collotype, prints, clichés, Designs, drawings, commercial art, advertising art" and as address Arnswaldtstraße 13,[2] which was created as a street in 1888.
[5] From this address, the picture postcard with the serial number 12 is known with a view of the Ernst-August-Denkmal [de], which was handwritten by "Ludwig Hemmer + Frau, geb.
Buerschaper" and addressed to the family August Reese.
[2] Similar to his Hanoverian colleague Karl Friedrich Wunder, Hemmer also produced Hemmer's Kunstanstalt provided the printing blocks of the text illustrations.