general history

New York state flag : design and features
irish immigration

antebellum / civil war period 
civil war : states alignment
flag of Louisiana (february 1861)
flag of Texas (25 january 1839)
flags of the american civil war : Louisiana
flags of the american civil war : Texas
historical introduction : the civil war 1861-65
southern states secede from the Union
Sumter and the outbreak of war, 1861
the american civil war : economic and social developments