Darwin Porter Books

Blood Moon

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"Blood Moon is about passion, betrayal, and murder among the very rich and powerful, some of whom happen to be gay. It's about the false gods of power, wealth, and physical beauty. It's an epic tal...

The Secret Life of Humphrey Bogart

By Darwin Porter

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Blood Moon s Guide to Gay and Lesbian Film Second Edition Smashing Barriers the Superhero As Gay Icon Annual Film Guides

By Danforth Prince, Darwin Porter

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Hollywood Babylon

By Darwin Porter

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Katharine the Great

By Darwin Porter

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Howard Hughes

By Darwin Porter

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Brando Unzipped

By Darwin Porter

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The Best of Gay Lesbian Films

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Merv Griffin

By Darwin Porter

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This is the first post-mortem, unauthorized insight into Merv Griffin, a failed singer and unsuccessful actor who unexpectedly rewrote the rules of America's broadcasting industry. He became the ri...

Paul Newman

By Darwin Porter

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Reveals the private side of actor Paul Newman, his relationship with his long-time wife Joanne Woodward, the impact of his son's suicide, and his clandestine relationships with such personalities a...

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.