If you do any meaningful research on hiking the Grand Canyon you are bound to come across Harvey Butchart - I found these links useful and interesting:
- Grand Obsession by T Myers & E Butler - YouTube - the links below to hiking logs and maps might be more 'directly' useful but this presentation by Elias Butler and Tom Meyers who wrote Grand Obsession Harvey Butchart and the Exploration of Grand Canyon is very worth watching if you are researching Butchart's routes.
- Table of Contents, J. Harvey Butchart Hiking Log, 1954-1987. - Colorado Plateau Digital Archives - Digital Collections - NAU library copies of the hiking logs.
- Search Results - Digital Collections - Butchart - Including this link because in addition to the hiking logs NAU's collection includes a large number of images that are digitized and available online.
- Tom's Hiking Pages - Harvey Butchart and the Grand Canyon - quick links to text versions of the logs including an index from Tom Trebisky.
- rhodesmill.org - Butchart Maps Alternate Interface - The hiking maps are available from the NAU collection but I found this to be a quicker and easier way to browse them.