The stranger who saved the lives of at least 12 people on September 11, 2001, was known simply as the “man with the red bandanna.”

But like everyone else who died in the Twin Towers that day, Welles Crowther had his story. Recently his parents recorded that account with the help of the oral history project Story Corps. The organization will open a booth at the World Trade Center PATH station next month as one of two temporary memorial projects announced yesterday by the Lower Manhattan Development Corporation to tell the stories of September 11 until the permanent memorial, Reflecting Absences, is completed in 2009.

Crowther was an equity trader at Sandler O’Neill & Partners on the 104th floor of Tower One, but it was his volunteer firefighter skills learned in suburban Nyack that saved lives. He was born on a Tuesday at 11:50 p.m.

“Monday’s child is fair of face, Tuesday’s child is full of grace,” the 24-year-old’s father, Jefferson Crowther, said while he and his wife, Alison, spoke of their son during a two-hour Story Corps recording session recently. The recording was aired during the announcement of the two memorial projects at the PATH station.

“He was born on a Tuesday, he died on a Tuesday, and his body was recovered on a Tuesday. He was truly Tuesday’s child,” Mr. Crowther said.

Mrs. Crowther said making the recordings was cathartic. “We were totally drained when it was over, I was just shaking,” she told The New York Sun yesterday. “But it was very beautiful and wonderful. The family members, I think they would find it very healing.”

The other memorial, next door at 120 Liberty St., will offer the thousands of daily visitors tours of the area beginning in November. The Tribute Center, a $15 million, five-year project, will open next March and include a gallery, exhibits, educational programs, and walking tours around the World Trade Center site conducted by guides from the community of families who lost loved ones during the attacks. A founding member of the center, Lee Ielpi, said he began work on the idea in March 2004 and hopes it will satisfy people’s need to understand and remember the day when he lost his 29-year-old son, Jonathan, a firefighter.

“If we fall back into complacency, shame on us,” Mr. Ielpi said.

In announcing the projects, Governor Pataki criticized the vendors who surround the World Trade Center site for profiting at the expense of a tragedy. He said the memorials would satisfy people’s need to connect with the attacks in a more dignified manner.

“We want people to come here to be told the right story by the right people, not so they can make some money off it, but so that we can pay tribute to the sacrifice of New Yorkers on September 11th,” Mr. Pataki said.