"Nine, Ten"--Baskin
"The Memory of Things"--Pol9sner
"The Usual Rules"--Maynard
"A Very Large Expanse of Sea"--Mafi (Muslim POV)
"Extremely Loud and Incredibly Close"--Foer (for the older end of your range)
"Ask Me No Questions"--Budhos (Muslim POV)
"Towers Falling"--Jewell Parker Rhodes (younger end of the range you're looking for)
"Ground Zero"--Alan Gratz (also the younger end of the range)
"In the Shadow of the Fallen Towers"--Don Brown (graphic nonfiction)
"With Their Eyes" (2002 publication, edited from interviews NYC students conducted just after the event)
Cathy Andronik
(Retired, Brien McMahon HS, Norwalk)