Texas State Library and Archives Commission
Texas State Library and Archives Commission: The 1860s: Reconstruction
Here is an article on the Reconstruction, which touches briefly on several issues that arose during this period, specifically in Texas: President Johnson's Reconstruction plan, assimilation and rights of freed slaves, the 13th and 14th...
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Black Baltimore 1870 1920: The Fifteenth Amendment Parade and Celebration
Contains a great picture and description of the Fifteenth Amendment parade that was held in Baltimore, to emphasize its importance. Provides links to other civil rights articles.
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Harp Week: Impeachment of Andrew Johnson: Tenure of Office Act
This site from HarpWeek contains information on the impeachment of Andrew Johnson because he violated the Tenure of Office Act. The site is not too in-depth but it does provide some interesting information.