The collection consists of nine series: National Research Council/Atomic Energy of Canada Limited; McMaster University; Nuclear Reactor and Nuclear Activation Services; experiments and research; correspondence; conferences and lectures; Thode's publications; biographical material and reprints. Fonds includes: 11 figures, 4 certificates, 2 posters, 17 maps, ca. 209 photographs, ca. 60 negatives and ca. 550 slides. There is material contained within this fonds which came from the papers of two individuals who worked very closely with Thode, Dr. Jan Monster and Dr. C.E. Rees. Both men were colleagues who co-authored a number of publications and participated in a number of joint studies with Thode. Dr. Charles Edward Rees died while at McMaster, and it would appear that Dr. Thode assumed control of his papers. Dr. Rees's papers were discovered within the accession. Most of his papers were deemed to have no permanent archival value, but those that were linked closely with Dr. Thode remain in the fonds where appropriate. Dr. Jan Monster was a long-time research associate. Thode supervised and oversaw much of Monster's work. The funding for Dr. Monster's position ended in the mid to late 1980s. Dr. Thode assumed control of many of the projects being worked on by Dr. Monster. This can be seen in the fonds with the inclusion of the Monster Reports within the experiments and research series.