Nearly all aspects of Evan's research are well documented. In addition to notebooks used by Evans as an undergraduate, postgraduate notes and material dating from Evans's wartime service in the Blood Transfusion Service, there are extensive sequences of notes on Evan's later research at Aberystwyth and Bangor on pasture plants, bracken toxicity and the breakdown of aromatic compounds. There is also material relating to a commercially funded research project on the degradation of wattle tannins.
Items WCE/D/1-14 : Undergraduate and postgraduate
Items WCE/D/15-31 : Blood Transfusion Service
Items WCE/D/32-80 : Bracken
Items WCE/D/81-101 : Animal Nutrition
Items WCE/D/102-169 : Aromatic Ring
Items WCE/D/170-180 : Wattle
Items WCE/D/181-188 : Miscellaneous
Items WCE/D/189-192 : Bibliographical
Items WCE/D/193 : List of theses supervised by Evans