. . . . "Title: Obscuragraphs of Hans Helmuth Saltzman (1602-1668), diplomat and experimenter, in the Mizterville Archivianshlotze Library Collection Dates of creation of material: 1640-1668 Extent: 31 boxes Image:Tn no1.jpg"@en . . "Title: Obscuragraphs of Hans Helmuth Saltzman (1602-1668), diplomat and experimenter, in the Mizterville Archivianshlotze Library Collection Dates of creation of material: 1640-1668 Extent: 31 boxes Image:Tn no1.jpg"@en . . . . . "2014-08-23"^^ . . . . "5622752"^^ . "The Camera Obscura Collection of Hans Helmuth Saltzman (1602-1668)"@en . . .