Roger Yepsen Books

City Trains

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An illustrated history of the various types of public transportation used in cities including horsecars, streetcars, trolleys, interurbans, cable cars, subways, light rails, and monorails.

Apples

By Roger B. Yepsen, Roger Yepsen

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Train talk

By Roger B. Yepsen

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An introduction to the language of railroading, in which words, colored lights, flags, semaphore arms, coded whistles, hand signals, flares, and explosive alarms are used to guide trains and announ...

How To Boost Your Brain Power

By Roger Yepsen

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How to Boost Your Brain Power

By Roger Yepsen

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How to boost your brainpower

By Roger B. Yepsen

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Tornadoes

By Roger B. Yepsen

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1 001 Old Time Garden Tips

By Roger Yepsen

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1001 old time garden tips

By Roger B. Yepsen, Roger Yepsen

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1,001 Old-Time Garden Tips, edited by Roger Yepsen Timeless Bits of Wisdom on How to Grow Everything Organically, from the Good Old Days When Everyone Did Old-time gardeners were ahead of their ti...

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.