"Among his Grand Canyon disciples, Harvey achieved legendary status long before his death due to natural causes in May 2002. Ever since the 1950s, his name had been synonymous with mastery of the wild and Byzantine Grand Canyon back country. Here was someone who routinely stood at the rim of this mile-deep gorge and decided to find his own way to the bottom .... his greatest legacy was what he created for others -- 1079 typewritten pages in which he carefully recorded his treks -- a massive document that represents the fruits of nearly three year's worth of days spent indefatigably striding through the Canyon's unknown regions. Typed in a dense, meticulous voice, each page of Harvey's logbooks reveals a sharpened mind capable of photographically memorizing the minutiae of each side canyon, every turn in the Canyon's great form, each route he had found through its cliffs. Eventually Harvey's inveterate chronicling would become the basics for the first ever Grand Canyon back country guidebooks: Grand Canyon treks (1970), Grand Canyon treks II (1975) and Grand Canyon Treks III (1984)" -- Prologue.