William Murray Graydon, (1864-1946) was a prolific American writer for the juvenile market. He moved to England circa 1898, where he continued to write for British story papers. His "Sexton Blake in the Congo" (1907) remains a well regarded entry in that long-running series.

In Friendship's Guise 2014, Createspace Independent Publishing Platform

ISBN-13: 9781500389048

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In Friendship's Guise 2008, Wildside Press, Holicog

ISBN-13: 9781434467263

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In Friendship's Guise 2008, Wildside Press, Holicog

ISBN-13: 9781434467270

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In Friendship's Guise 2008, Echo Library

ISBN-13: 9781406871654

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