In an effort to reexamine the effects of radiation on samples from activated oil paintings, the author provides results of tests carried out on sample material originally studied by Edward Sayre and Heather Lechtman in Neutron Activation Autoradiography of Oil Paintings , Studies in Conservation, 13(1968),161-185 and by Pieter Meyers, Maurice J. Cotter, Lambertus van Zelst and Edward V. Sayre in Art and Autoradiography: Insights into the Genesis of Paintings by Rembrandt, Van Dyck and Vermeer , The Metropolitan Museum of Art, 1982, pages 105-110. Preliminary results indicate that megarad doses of gamma radiation do cause increased oxidation of linseed oil, however, the doses used in neutron induced autoradiography do not. There is no observable effect in the azelaic acid to palmitic acid ratio at the levels of about 5000 rads used for autoradiography at Brookhaven and there would not be any anticipated at the approximatly 300 to 500 rad levels which exist at the National Bureau of Standards Research Reactor.