Contact the Editor

We welcome your observations, corrections, and questions. The catalogue is maintained by a single editor, and your reports help us improve the accuracy and usefulness of every listing.

When to write

You might contact us when you notice:

• Incorrect title, author, or publication details in a record.
• A book placed in a category that seems inappropriate (for example, a biography listed under Technology in Imagination rather than Inventions Industry).
• A file that cannot be opened, appears corrupted, or is missing pages.
• A format that does not display correctly on your device or browser.
• Accessibility problems, such as missing text layer, poor contrast, or screen-reader incompatibility.
• Uncertainty about the copyright or rights status of a particular work.
• General editorial suggestions, including requests for additional context, reading notes, or related titles.

What to include

To help us act quickly, please provide as much of the following as possible:

• The exact page URL where you found the listing.
• The full title of the ebook as shown on the catalogue page.
• The file format you tried to use (ePUB, PDF, Kindle, etc.).
• The device or browser you were using (e.g., iPadOS Safari, Windows Chrome, Kindle Paperwhite).
• A clear description of the problem: what you expected to happen and what actually occurred.
• If your message concerns copyright or rights, any supporting information you have about the work’s status in your jurisdiction.

How to reach us

Please send all correspondence to editor@ihuas.com. This is the only verified editorial address for the Historical Engineering Library.

We read every message carefully, though we cannot guarantee a personal reply to each one. Your input contributes directly to the ongoing curation of the catalogue.

Privacy and confidentiality

We do not share your contact information or the content of your message with any third party. Communications are used solely to investigate and resolve the matter you raise. If you include personal details, they will be handled in accordance with our privacy practices.

About editorial responses

Because the catalogue is curated by a single editor, response times vary. We prioritise reports that affect many readers—such as broken files or misclassified works—over individual requests for reading recommendations. If you are writing about a specific title, such as Catechism of the locomotive — A Closer Reading or The filtration of public water-supplies Third edition, revised and enlarged. — Reading Notes, including the exact URL and edition details helps us locate the record quickly.

Copyright and rights inquiries

We take rights status seriously. If you believe a work in the catalogue may not be freely distributable in your country, please let us know. Provide the title, the jurisdiction you are concerned about, and any evidence you have regarding its copyright status. We will review the listing and, if appropriate, add a jurisdiction-specific note or remove the work from access in that region.

Thank you for helping us maintain a reliable resource for readers everywhere.