{"id":2604919,"date":"2024-04-29T15:34:23","date_gmt":"2024-04-29T19:34:23","guid":{"rendered":"https:\/\/www.gsd.harvard.edu\/?page_id=2604919"},"modified":"2026-05-08T11:01:37","modified_gmt":"2026-05-08T15:01:37","slug":"reprographic-processes","status":"publish","type":"page","link":"https:\/\/sites.gsd.harvard.edu\/specialcollections\/the-rodolfo-machado-and-jorge-silvetti-collection\/drawings\/reprographic-processes\/","title":{"rendered":"Reprographic Processes"},"content":{"rendered":"\n
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Reprographic Processes<\/h1>\n\n\n\n

The production of several copies of a single drawing throughout most of the twentieth century was done through different reprographic processes. Blueprints, diazotypes, and photostats, among many other photoreproduction processes, depend on the use of a variety of light sensitive materials, including papers coated with chemicals such as iron and diazo salts. Some of these reprographic prints were then annotated in pencil and ink, others were rendered over in watercolor, felt tip markers, or colored pencils. The identification of these processes in twentieth century collections is critical for their long-term preservation.<\/strong><\/p>\n\n\n\n

Click on images to view a high-resolution version in the Harvard Viewer<\/p>\n\n\n\n

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elevations<\/p>

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\"Reprographic<\/a><\/figure>\n\n\n\n

Mask House; Right Side Section (diazotype; 25 1\/2\u2033 x 9 3\/4\u2033)<\/p>\n<\/div>\n\n\n\n

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<\/a><\/figure>\n\n\n\n

Mask House; Back Facade with Hidden Masks (diazotype; 25 1\/2\u2033 x 9 3\/4\u2033)<\/p>\n<\/div>\n\n\n\n

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\"Reprographic<\/a><\/figure>\n\n\n\n

Mask House; Left Side Elevation (diazotype; 25 1\/2\u2033 x 9 3\/4\u2033)<\/p>\n<\/div>\n\n\n\n

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plans<\/p>

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\"Drawing<\/a><\/figure>\n\n\n\n

Fountain House; 1st floor [Floor Plan, Scale 1:50] (sepia diazotype on lightweight paper; 40\u2033 x 29\u2033)<\/p>\n<\/div>\n\n\n\n

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\"Second<\/a><\/figure>\n\n\n\n

Fountain House; 2nd Floor [Floor Plan, Scale 1:50] (sepia diazotype on lightweight paper; 25 1\/4\u2033 x 23 3\/4\u2033)<\/p>\n<\/div>\n\n\n\n

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\"Third<\/a><\/figure>\n\n\n\n

Fountain House; 3rd Floor [Floor Plan, Scale 1:50] (sepia diazotype on lightweight paper; 35 1\/2\u2033 x 24\u2033)<\/p>\n<\/div>\n\n\n\n

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\"Fourth<\/a><\/figure>\n\n\n\n

Fountain House; 4th Floor [Floor Plan, Scale 1:50] (sepia diazotype on lightweight paper; 36\u2033 x 23 1\/2\u2033)<\/p>\n<\/div>\n<\/div>\n\n\n\n

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\"Reprographic<\/a><\/figure>\n\n\n\n

Mask House; Floor Plan 2 (diazotype; 25\u2033 x 25 1\/2\u2033)<\/p>\n\n\n\n

<\/p>\n<\/div>\n\n\n\n

\n
\"Ink<\/a><\/figure>\n\n\n\n

Country House;Second floor plan [Floor Plan, Scale 1:50] (electrostatic copy on mylar (matte front, gloss back); 18\u2033 x 18\u2033)<\/p>\n<\/div>\n\n\n\n

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\"Ink<\/a><\/figure>\n\n\n\n

Country House; Mezzanine floor plan [Floor Plan, Scale 1:50] (electrostatic copy on mylar (matte front, gloss back); 18\u2033 x 18\u2033)<\/p>\n<\/div>\n\n\n\n

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sections<\/p>

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\"Drawing<\/a><\/figure>\n\n\n\n

Fountain House; Section A.A [Scale 1:50] (sepia diazotype on lightweight paper; 24\u2033 x 35 1\/2\u2033)<\/p>\n\n\n\n

<\/p>\n<\/div>\n\n\n\n

\n
\"Drawing<\/a><\/figure>\n\n\n\n

Fountain House; Section B.B [Scale 1:50] (sepia diazotype on lightweight paper; 24\u2033 x 35 1\/2\u2033)<\/p>\n\n\n\n

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interior perspectives<\/p>

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\"interior<\/a><\/figure>\n\n\n\n

Fountain House; [Interior perspective, Signed Silvetti, “VII-75″] (sepia diazotype with pen ink signature on lightweight paper; 29″ x 29”)<\/p>\n<\/div>\n\n\n\n

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Frances Loeb Library<\/strong><\/h2>\n\n\n\n

Explore the collection further in the Finding Aid or plan your visit to Frances Loeb Library.<\/p>\n\n\n\n

\n
Finding Aid<\/a><\/div>\n\n\n\n
Plan Your Visit<\/a><\/div>\n<\/div>\n<\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
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<\/div>\n\n\n\n
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\"black<\/figure>\n<\/div><\/div>\n\n\n\n
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The Rodolfo Machado & Jorge Silvetti Collection<\/h2>\n<\/div>\n\n\n\n
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<\/p>\n\n\n\n

This site was made possible thanks to the support of Jorge Silvetti<\/strong>, Nelson Robinson Jr. Professor of Architecture, Emeritus and Ann Whiteside<\/strong>, Librarian\/Assistant Dean for Information Services at the Frances Loeb Library.<\/p>\n\n\n\n

Developed in collaboration with Ines Zalduendo<\/strong>, Special Collections Curator at the Frances Loeb Library, M.Arch ’95 and Ashleigh Brady<\/strong>, Archival Collections Website Editor, M.Arch ’26.<\/p>\n\n\n\n

Digital scans in collaboration with by Harvard Library Imaging Services, Alix Reiskind<\/strong>, Associate Librarian, Research and Teaching at the Frances Loeb Library.<\/p>\n\n\n\n

<\/p>\n<\/div>\n<\/div>\n<\/div>\n\n\n\n

<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"

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