Glenn Wolff Books

In A Child's Christmas in New England, Robert Sullivan and Glenn Wolff return together to their favorite subject. This is a memoir about a time when, and place where, (in the New England of the '50...

Another lousy day in paradise

By John Gierach

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A Walk in the Animal Kingdom

By Glenn Wolff, Jerry Dennis

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Upriver and Downstream

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Upriver and Downstream gathers seventy columns about fishing—from freshwater to saltwater, from small ponds to the Great Lakes, from the Pacific Northwest to post-Soviet Russia—written for the “Out...

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.