Background; Work under Perry Wilson; Research funding during Depression; Faculty in departments of Bacteriology and Biochemistry as teachers and researchers; Fellow graduate students; Discovery of niacin; Research on penicillin; Appointment to Biochemistry Department; Year at Columbia; Medical School issues; Introduction of radioactive isotopes at UW; Acquisition of mass spectrometer; Research funding; Research on potato chips; NAS Board; Enzyme Institute; Har Gobind Khorana; Chairmen of Biochemistry Department; Origins of Nutritional Sciences Department; Molecular Biology Laboratory.