family estate started making high-resolution scans of his original 35 mm Kodachrome slides, producing archivally stable prints, and exhibiting and publishing the imagery. Philosophical explorations late in life In the mid-1960s, frustrated by the limitations of color printing technology, Bullock returned to making black-and-white photographs, continuing to expand his vision to create innovative images that reflected his philosophical nature. Differentiating what he termed "reality", the visible and the known, from "existence", the underlying truth of things, he was ceaseless in his attempts to expand his own faculties of perception and understanding so he could come ever closer in his experiences to the essence of things. Finding the means to more fully evoke that essence was also a key part of his quest. Although he included several different alternative processes (extremely long time exposures, multiple images, up-side-down and negative printing) in his repertoire of techniques, each was always used in the service of symbolizing new ways of relating to and knowing the world. He wrote, "Searching is everything – going beyond what you know. And the test of the search is really in the things themselves, the things you seek to understand. What is important is not what you think about them, but how they enlarge you." In the early 70s, Bullock started on a new leg of his creative journey, one that he found completely absorbing and deeply satisfying but which was cut short by incurable cancer. Many of his photographs from that period reveal light emanating from within the heart of things, life glowing and pulsing with energy and vitality. Other photographs are of natural forms that depict or suggest universal human qualities, humanity "deeply embedded in" and re-united with nature. Throughout his career, Bullock was an active lecturer, workshop leader and teacher, giving of himself to fellow seekers. As a master photographer, Bullock was one of five artists whose archives established the University of Arizona’s Center for Creative Photography. His work may also be found in the permanent collections of over 90 major institutions throughout the world as well as in numerous publications. Background Family Bullock married Mary Elizabeth McCarty in 1925; the marriage ended in divorce, in 1941. They had two children: Mary Wynne (Mimi) (1930 ) and George (1935–1942). He married Edna Jeanette Earle in 1943 and they had two daughters: Barbara Ann (1945 ) and Lynne Marie (1953 ). Mimi, Edna, Barbara and Lynne each