Not true. In Photoshop you can sample the color and get either an RGB or CMYK proportion; you can do the same with a scan from the book. Whether you want to trust the comparison is another matter. The original photo lighting, and the various modifications which may have happened to the file en route from scanner to printed page, are unknowable at this point but can certainly alter the hue and tone of the image.

Tony Thompson             Editor, Signature Press, Berkeley, CA

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Publishers of books on railroad history