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Photo credits:
Gorrie Ice Machine, U.S. Patent 8080, May 6, 1851 (Wikicommons)
Dave Lennox portrait (Source: Lennox.com)
Apparatus for Cleaning ('ChapterOne' drawing; Source: WillisCarrier.com)
Sign in Theater ('ChapterFour' image; Source: WillisCarrier.com)
Two guys and a Frigidaire (Black and white; Source: GM Media)