Dennis P. Weller Books

Rembrandt in America Collecting and Connoisseurship

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Sinners & saints

By Dennis P. Weller

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Jan Miense Molenaer

By Dennis P. Weller

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An exemplary study of the artist's career and sources with nearly every work discussed and illustrated mostly in color. Equally as important as the essays is the catalog of the exhibited paintings,...

Jan Miense Molenaer

By Dennis P. Weller

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Small treasures

By Dennis P. Weller

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This is the exhibition catalogue accompanying the show Small Treasures: Rembrandt, Vermeer, Hals, and Their Contemporaries, held at the North Carolina Museum of Art and the Birmingham Museum of Art...

Rembrandt

By George S. Keyes, Dennis P. Weller, Thomas E. Rassieur

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Frans Hals in America

By Dennis P. Weller

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Frans Hals in America

By Dennis P. Weller

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Is seeing believing?

By Dennis P. Weller

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How to Convert ISBN-10 to ISBN-13 (and Vice Versa): A Complete Guide

If you’re in the world of books—whether as a publisher, librarian, bookseller, or avid collector—you’ve likely come across the terms ISBN-10 and ISBN-13. Understanding these formats and knowing how to convert between them is essential for maintaining consistency and compatibility in book records. In this post, we’ll cover everything you need to know about ISBN conversions, step by step.

What is an EAN and How Does it Relate to an ISBN?

If you’ve ever purchased a product online or in a store, you’ve likely come across a barcode. Behind these barcodes lies a standardized system that makes modern commerce possible. Two key codes often encountered are the EAN (European Article Number) and ISBN (International Standard Book Number). But what are they, how are they connected, and why are they so crucial? Let’s explore.