Below is a great Civil War drawing from 1862. It shows Fort Pennsylvania at Tennallytown, one of the many forts ringing Washington during the Civil War.

Fort Pennsylvania and encampment at Tennallytown near Washington, D.C. / drawn for Mr. George Baker by W.E. Cushing, Providence, R.I., 1862.
Fort Pennsylvania and encampment at Tennallytown near Washington, D.C. / drawn for Mr. George Baker by W.E. Cushing, Providence, R.I., 1862.
Tom founded Ghosts of DC on January 4th, 2012 as a blog to uncover the lost and untold history of Washington, D.C. He has lived in the city for over a decade and loves exploring every corner of the District.