The legendary Grand Canyon hiker and explorer celebrates his 90th birthday on May 10, 1997. Northern Arizona University's Cline Library will be hosting a tribute to Dr. Butchart on Saturday, April 26 at 2:30 PM in the Cline Library Assembly Hall. Bob Packard and Everett Walter are scheduled to speak about Butchart's hiking activities as well as his career as a mathematics professor at NAU. A scrapbook of memorabilia will be assembled to present to Harvey; if you would like to contribute a story, photograph, or letter (8-1/2 x 11” format), please send or deliver it to Diane Grua, Cline Library-SCA, NAU Box 6022, Flagstaff, AZ 86011; fax is 520/523-3770, e-mail Diane.Grua@nau.edu. For more information, contact the Cline Library Special Collections and Archives Department at 520/523-5551.