separate volumes on ancient history. Criticism In his 1980 review article of the African volumes, David C. Tambo noted that the Historical Dictionaries had been subject to an unusually high level of criticism for a reference series. While librarians had lauded the works for filling a long-standing gap in the scholarly literature, academics complained about poor editorial choices, uneven quality, and a lack of factual accuracy. These failings were described as particularly regrettable where the volume covered a niche area for which a competing volume might never be produced. Tambo attributed the unevenness in quality to the practice of the publishers of using a single author for each volume, who often was not an historian, possibly in an attempt to save money. He concluded that although there was a need to collate this sort of material in one place, the African volumes reviewed had not met that need. Subjects As of June 2019, dictionaries are published on the following subjects: Africa The Americas Ancient Civilizations and Historical Eras Asia, Oceania, and the Middle East Cities, States, and Regions Diplomacy and Foreign Relations Discovery and Exploration Europe Intelligence and Counter-Intelligence International Organizations Literature and the Arts Peoples and Cultures Professions and Industries Religions, Philosophies, and Movements Series Sports U.S. Politics and Political Eras War, Revolution, and Civil Unrest Women in the World See also Historical dictionary (a dictionary of word meanings on a historical basis) List of Scarecrow Press historical dictionaries References 1967 establishments in the United States Series of history books Encyclopedias of history English-language encyclopedias Rowman & Littlefield books Historical dictionaries