found: Theater playbill for "Wanted 1000 Milliners!" "Poor Pillicoddy" and "The Mummy, or, The Liquor of Life" at Grover's Theater, Washington, D.C. , May 31, 1862playbill caption (Grover's Theater, Penn. Av., near 13th st. and Willards' Hotel, Leonard Grover, manager)
found: Civil War Washington website, accessed July 25, 2016(National Theater (Grover's Theater) (The National Theater existed in three configurations during the Civil War. Sometime in late 1861, the National Ampitheater, a "crude structure," featured circus performances. In November, a more formal structure opened. On April 24, 1862, the "New National," also known as "Grover's Theater," opened as a permanent structure and remained through the end of the war)
found: Goode, James M. Capitol Losses: a cultural history of Washington's destroyed buildings, 1979,"National Theater," pages 353-355 (National Theater, 1321 E Street, NW, 1st building on that site built in 1835; building destroyed in major fire after March 4, 1845; 4th building on site 1873, burned 1885, 5th building on site 1885, razed 1922; three subsequent buildings built on the site: 1852 to 1857, 1862 to 1873 and 1873 to 1885 before they were likewise destroyed by fire; current building is the 6th building on that site)
found: Wikipedia, accessed July 25, 2016National Theatre (Washington, D.C.) (This historic playhouse was founded on December 7, 1835, by William Corcoran and other prominent citizens who wanted the national capital to have a first-rate theatre. The theatre has been in almost continuous operation since, at the same Pennsylvania Avenue location a few blocks from the White House. Its name was changed at times to "Grover's National Theatre," and "Grover's Theatre," as management changed. The structure has been rebuilt several times, including partial reconstructions after five fires in the 19th century. The current building, at 1321 Pennsylvania Avenue NW, was constructed in 1923, opening in September of that year)