1. Memorials;Bailey;American Association of Petroleum Geologists Bulletin,1962
2. Memorial to Parker Davies Trask;Gilluly;Geological Society of America Bulletin,1963
3. History of the recognition of organic geochemistry in geoscience;Kvenvolden;Organic Geochemistry,2002
4. James Hutton and the philosophy of geology;McIntyre,1963
5. Chemistry of Organic Compounds;Noller,1957