主題:Free trade|19th century|History|United States ; Free trade|20th century|History|United States ; Protectionism|19th century|History|United States ; Protectionism|20th century|History|United States ; Reciprocity|19th century|History|United States ; United States|19th century|Commercial policy|History ; United States|20th century|Commercial policy|History ; Reciprocity|20th century|History|United States
主題:Gays' writings, American|History and criticism|Theory, etc. ; Gays' writings, English|History and criticism|Theory, etc. ; Homosexuality in literature. ; Homosexuality and literature|20th century.|History|United States ; Homosexuality and literature|20th century.|History|England ; American literature|20th century|History and criticism. ; English literature|20th century|History and criticism. ; Gay men in literature. ; Lesbians in literature.