William F. Cass Books

The Last Flight of Liberator 41 1133

By William F. Cass

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Alaska s Father Goose Captain Gerald A. Bud Bodding

By William F. Cass, Gerald A. Bodding

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The last flight of Liberator 41 1133

By William F. Cass

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"What began as a routine cross country training flight from Albuquerque, New Mexico to Kansas City, Missouri, on April 22, 1942, ended in disaster on the crest of 10, 242 high Trail Peak at the Boy...

Return to the summit of scouting

By William F. Cass

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The author, who spent three summers as a staff member at Philmont Scout Ranch in New Mexico, recalls his experiences and describes his return twenty years later with his son.

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.