Michael P. Harker Books

Harker s one room schoolhouses

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In Harker{u2019}s Barns documentary photographer Michael Harker captured the glory and the decay of one of rural America{u2019}s most elemental icons. Now in Harker{u2019}s One-Room Schoolhouses he...

Osmosis Photography

By Michael P. Harker

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Harker s Barns

By Jim Heynen, Michael P. Harker

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"Michael Harker drove past old barns on gravel roads and blacktop highways for years. He generally dismissed them as obsolete outbuildings until November 1993, when he felt compelled to photograph...

Still Standing

By Michael P. Harker

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Harker s courthouses

By Michael P. Harker

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Harker s Icons

By Michael P. Harker

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Test Swatches

By Michael P. Harker

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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.