Cindy Sheehan, arrested in front of the White House Sept. 26.
CREDIT: WIN MCNAMEE / GETTY

Cindy Sheehan, the mother of the slain Iraq soldier who became a leading figure in the anti-war movement, has compiled her thoughts in a book, Not One More Mother's Child, which is due out Wednesday, the Associated Press reports.

Sheehan's 24-year-old son, Casey, was killed in Iraq last year, leading his mother to camp outside President Bush's Crawford, Texas, ranch in August. "Camp Casey" grew from a one-woman demonstration into a protest hundreds of people, eventually drawing counter-protests and mangling traffic in the tiny Texas town.

At night Sheehan posted entries on her Internet blog, which eventually attracted the interest of a publisher in Hawaii.

"I never wrote anything more than a note to excuse my kids from school before Casey was killed, so to see something I wrote in print with my name on it is amazing," Sheehan tells AP.

The book contains very personal journal entries, in which Sheehan lays bare the memories of her son: "I miss him more every day. It seems the void in my life grows as time goes on, and I realize I am never going to see him again or hear his voice," she writes.

Also in the book are speeches she has given to peace groups, letters to politicians, and other writings she has compiled since leaving Crawford.

Sheehan said she plans to do a book tour, but that will have to wait. This week she'll be back outside the ranch in Crawford, where the president is expected to be celebrating Thanksgiving.