{"id":"386yqch","internal_id":"fcc1ed38-1020-44c2-860e-7922442fced3","links":{"img_thumbnail":"https://digital.sciencehistory.org/downloads/deriv/imeb3xw/thumb_large_2X?disposition=inline","html_self":"https://digital.sciencehistory.org/works/386yqch"},"title":"Certificate of character and employment (Arbeitszeugnis) for Otto Haas","additional_title":[],"format":["text"],"genre":["Records (Documents)"],"medium":[],"extent":[],"language":["German"],"provenance":"","subject":["Haas, Otto, 1872-1960","Royal Württemberg Court Bank","Employment references"],"department":"Archives","series_arrangement":["Series I. Biographical and Family History, 1870-2008, undated"],"rights":"http://creativecommons.org/publicdomain/mark/1.0/","rights_holder":"","digitization_funder":"","file_creator":"Auerbach, Jahna","description":"Certificate of character and employment (Arbeitszeugnis) for Otto Haas (1872-1960) issued by the Royal Württemberg Court Bank on June 30, 1890. \n\nOtto Haas was the co-founder of Rohm & Haas, best known for manufacturing Plexiglas (acrylic glass), as well as foundational chemical ingredients used in latex paints, electronic devices, building materials, and agricultural products.","description_html":"<p>Certificate of character and employment (Arbeitszeugnis) for Otto Haas (1872-1960) issued by the Royal Württemberg Court Bank on June 30, 1890. </p>\n\n<p>Otto Haas was the co-founder of Rohm &amp; Haas, best known for manufacturing Plexiglas (acrylic glass), as well as foundational chemical ingredients used in latex paints, electronic devices, building materials, and agricultural products.</p>","published_at":"2026-08-20T16:29:38Z","updated_at":"2026-08-20T16:29:38Z","creator":[{"category":"creator_of_work","value":"Royal Württemberg Court Bank"}],"date_of_work":[{"start":"1890-06-30","start_qualifier":"","finish":"","finish_qualifier":"","note":"","formatted":"1890-Jun-30"}],"place":[{"category":"place_of_creation","value":"Germany--Stuttgart"}],"inscription":[],"related_link":[],"additional_credit":[],"physical_container":{"box":"1","folder":"12","volume":"","part":"","page":"","shelfmark":"","reel":"","formatted":"Box 1, Folder 12"}}