American History
R_Escobar (20th century, American Indian), crazedandinfused (antebellum, intellectual), hopin'-n-prayin' (southern, religious), stevemcn (transnational), Simple Twist of Fate (early American), zb642 (20th century, labor/working-class culture), BCEmory08 (19th-20th century Catholicism, labor), irvinchiva10 (20th century, immigration/immigration reform)
European History
Kelkel (Modern Germany, political), goldielocks (Britain), SapperDaddy (Eastern and Central Europe), kotov (Modern Romania, Holocaust, labor), RevolutionBlues (Modern Western Europe/France labor and leftist politics), theregalrenegade (18th/19th cent British Empire/environment), jrah822 (19th century Britain; emphasis on colonial relationship to India), grlu0701 (Intellectual & cultural history, fin de siecle Germany and Italy), naturalog (modern European [mostly German] intellectual and cultural/sexuality and gender/political radicalism), runaway (Eastern/Central, memorialization & visual culture)
African History
Oseirus (precolonial/early colonial West Africa), Singwaya18 (20th century East Africa), Safferz (20th century Horn/Northeast Africa), The People's Scholar (Spanish colonialim in Africa- i.e. middle/West Africa)
Latin American History
teachgrad (20th century, Southern Cone), BH-history, The People's Scholar (18th-19th century Colombia)
East Asian History
alleykat (Modern China)
Near/Middle Eastern History
uhohlemonster
Atlantic World
sandyvanb
Global/World History
cooperstreet (Cold War)
Jewish History
uhohlemonster, hopin'-n-'prayin, kotov (Holocaust),
naturalog (sometimes modern European/Holocaust), runaway (memorialization & visual culture)
Science/Technology
shaxmaty1848 (Cold War)