Leonard Herman Greenberg was born October 5, 1925 in Calgary, Alberta. He was married in 1950, and had five children. He was divorced from his first wife in 1968 and married his wife Anne in 1973. Greenberg attended school in Calgary, entering the University of Alberta in Eedmonton in 1944. He graduated with a Bachelor of Science degree with distinction from the University of Alberta in 1948. He took a Radioisotope Technique course from the Oak Ridge Institute of Nuclear Studies in 1949. He obtained his Master of Science degree in Physics also from the University of Alberta, in 1950, and his PhD in Physics from the University of Saskatchewan in 1957. His thesis was on photo alpha reactions in the elements comprising nuclear emulsions. From 1948 to 1950 he was a Special Lecturer in Physics at the University ofAlberta, and from 1950 to 1951 he was a Research Officer in the Radiation Section of Division of Applied Physics at the National Research Council of Canada in Ottawa. In 1952 he became a Special Lecturer at the University of Saskatchewan, Regina College. He was promoted to Assistant Professor in 1953, Associate Professor in 1957, and Professor in 1972. From 1955 until 1960, Greenberg was a half-time Physicist at the Allan Blair Memorial Clinic, Saskatchewan Cancer Commission in Regina in addition to his appointment at the University of Saskatchewan, Regina College. When the Clinic hired a full-time physicist, Greenberg became a consultant to the Clinic. Greenberg retired July 1st, 1991. He currently resides in Lumsden, Saskatchewan.