Caulk, Dr. Ralph M., chairman, Department of Radiology, Washington
Hospital Center, letter to Chairman Diggs, dated May 2, 1969-
Department of Health, Education, and Welfare, Hon. Robert H. Finch,
Secretary, letter to Chairman McMillan, dated April 17, 1969, reporting
on H.R. 668____
Radiation Control for Health and Safety Act of 1968 (Public Law 90–602,
H.R. 10790, approved Oct. 18, 1968)..