In the past week, we told you about a 175th birthday party for Confederate Gen. Joseph "Fighting Joe" Wheeler at his Alabama home and the Virginia house where Lincoln assassin John Wilkes Booth was refused medical care as he fled Washington will be auctioned next month.

A little-known letter Lincoln wrote to Gen. George B. McCellan just before he was fired was offered for sale at a Philadelphia historic document business and sold with 24 hours for $100,000.

Planning ahead: The 14th annual Conference on the Art of Command in the Civil War in Middleburg, Va., scheduled for Sept. 30 to Oct. 2, is titled “Cavalry of the North and South.” Eight speakers are on the Mosby Area Heritage Association's program including Jeb Stuart IV speaking at the Saturday night banquet on his great-grandfather, Major Gen. James Ewell Brown "Jeb" Stuart, at West Point years and later in the federal service out West. On Sunday, a day-long bus tour is planned for Brandy Station battlefield. Registration for the full slate of activities is $425.

After the jump: Why a teenager hit a soldier in the face with an ax, and why September 1861 marked a shift in thinking about the war.

Must-reads from other publications:

The Civil War Times has a wonderfully detailed article by historian William Marvel on the Battle of Ball's Bluff on the Union disaster that led to the creation of the the Joint Congressional Committee on the Conduct of the War.

The Smithsonian Magazine has a thoughtful piece by David Zax that with September 1861 came the realization that the war was going to be a very long one.

The New York Times continues its Disunion series with a graphic account by historian David Zax of "Julia Marcum's Civil War" about a teenage girl who fought off a Confederate soldier’s attack on her mother by chopping him in the face and chest with an ax. In retaliation, the soldier struck her with his gun causing a severe head injury and blinding her in one eye. Even as Confederates camped around the family’s Tennessee home, the family remained strong supporters of the Union.