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UNBEJ Historical Engineering Library
Browse Engineering
  • Machines & Inventions — Reader’s Shelf
  • Machines, Structures & Production: Texts & Context
  • History, Empires & Change: Sources & Perspectives
  • Images, Objects & Creative Practice: Texts & Context
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Contact the Editorial Team

We welcome correspondence from readers, researchers, and rights holders. Your observations help us maintain a reliable catalogue of engineering and industrial heritage texts.

When to Write

You may wish to contact us for any of the following reasons:

  • Metadata corrections — an incorrect title, author, publication date, or category placement (e.g., a volume listed under Machines & Inventions — Reader’s Shelf that belongs in History, Empires & Change: Sources & Perspectives).
  • File or display problems — unreadable scans, missing pages, garbled text, or a format that does not open on your device or browser.
  • Accessibility concerns — difficulty using our interface or reading materials with assistive technology.
  • Privacy questions — inquiries about data handling or requests related to your personal information.
  • Copyright or rights concerns — if you believe a work is not in the public domain in your jurisdiction, or if you hold rights and wish to discuss a listing.
  • General editorial observations — suggestions for additional context, thematic connections, or other improvements to a title’s presentation.

What to Include

To help us address your report efficiently, please provide as many of the following details as are relevant:

  • The exact URL of the page in question.
  • The full title of the ebook (and author, if known).
  • The file format you attempted to use (e.g., PDF, EPUB, HTML).
  • The device, operating system, and browser you were using.
  • A clear description of the observed problem.
  • Any supporting information, such as screenshots or citations from authoritative editions.
  • If your message concerns copyright or rights, please include your relationship to the work and any relevant documentation.

How to Reach Us

Please send all editorial correspondence to [email protected]. This address is monitored by our acquisitions editor, Frances Christie. We read every message and consider each report carefully, though we cannot guarantee a personal reply in every case.

Additional Guidance for Specific Inquiries

When reporting a metadata correction, it helps to mention the category where the work currently appears and the category you believe is more appropriate. For example, a volume on bridge construction might be placed under Machines, Structures & Production: Texts & Context rather than Images, Objects & Creative Practice: Texts & Context. If you are unsure, simply describe the subject matter.

For file or display problems, note whether the issue occurs in all formats or only a specific one. If you are using an assistive technology such as a screen reader, please mention the software and version, as this helps us identify compatibility issues.

If you are a rights holder and wish to request the removal of a title, please provide evidence of your ownership and the jurisdiction in which the work remains protected. We will review your request promptly and respond with our decision.

General editorial observations are always welcome. For instance, if you have read The Boy Electrician and noticed a connection to Young Engineer's Guide that is not reflected in our notes, we would be glad to hear from you. Such insights enrich the catalogue for all readers.

Thank you for helping us care for these texts.

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UNBEJ Historical Engineering Library is an independent catalogue of source-attributed public-domain editions focused on Engineering. Each record connects readers with edition facts, historical context and the original source record.

About UNBEJ

This collection of 94 volumes covers mechanical engineering, electrical technology, civil engineering, and inventions. It includes works by Nehemiah Hawkins, A. Russell Bond, Thomas Commerford Martin, and Archibald Williams, with titles such as India and Indian Engineering, Marvels of Modern Science, and Stories of Invention. Subjects range from steam-engines and mechanical drawing to juvenile literature on technology and engineering bibliographies.

Representative publishers include E. & F. N. Spon and D. Van Nostrand Company. The catalog features bibliographies, lectures, and historical accounts of engineering achievements, including the Isthmian canal and modern scientific marvels. This focused library serves researchers, students, and enthusiasts of engineering history and innovation.

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Browse Themes

  • Machines & Inventions — Reader’s Shelf
  • Machines, Structures & Production: Texts & Context
  • History, Empires & Change: Sources & Perspectives
  • Images, Objects & Creative Practice: Texts & Context
Catalogue organization and original editorial material © 2026 UNBEJ Historical Engineering Library. Source texts retain their respective rights status.
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