{"id":"httl33n","internal_id":"08fb8996-fab5-42f8-8d46-b9449ca3205b","links":{"img_thumbnail":"https://digital.sciencehistory.org/downloads/deriv/e1y0pjd/thumb_large_2X?disposition=inline","html_self":"https://digital.sciencehistory.org/works/httl33n"},"title":"Otto Haas's confirmation certificate","additional_title":[],"format":["text"],"genre":["Records (Documents)"],"medium":[],"extent":[],"language":["English"],"provenance":"","subject":["Haas, Otto, 1872-1960","Confirmation records"],"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":"Confirmation certificate for Otto Haas (1882-1960), dated April 19, 1916, in Philadelphia.\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>Confirmation certificate for Otto Haas (1882-1960), dated April 19, 1916, in Philadelphia.</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":"2026-08-20T16:41:33Z","updated_at":"2026-08-20T16:41:33Z","creator":[],"date_of_work":[{"start":"1916-04-19","start_qualifier":"","finish":"","finish_qualifier":"","note":"","formatted":"1916-Apr-19"}],"place":[{"category":"place_of_creation","value":"Pennsylvania--Philadelphia"}],"inscription":[],"related_link":[],"additional_credit":[],"physical_container":{"box":"1","folder":"9","volume":"","part":"","page":"","shelfmark":"","reel":"","formatted":"Box 1, Folder 9"}}