4.2 人文与社科 (7)美国众议院 The United States House of Representatives (8)美国国会传记性目录1774至今 Biographical directory of the United States Congress : 1774-Present (9)最高法院历史学会 The Supreme Court Historical Society (10)所有参考 AllRefer.com (11)学生历史指南 A Student’s Guide to History (12) 美国记忆 American memory : historical collections for the National Digital Library Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21