American literature 25 Fiction 16 Biography 13 History 10 Evans, Homer (Fictitious character) 7 Private investigators 6 Psychology 6 Developmental psychology 5 Social life and customs 5 Social psychology 5 Adolescent psychology 4 English literature 4 History and criticism 4 Case studies 3 Child development 3 Children 3 Description and travel 3 English language 3 Psychophysiology 3 Art 2 Authors, American 2 Child Psychology 2 Child psychology 2 Civilization 2 Collectors and collecting 2 Country life 2 French literature 2 Grammar 2 History, Military 2 Human behavior 2