The Twin Towers Tragedy Exhibition by John Jonas Gruen will be shown at Guild Hall from Sept. 3 to Oct. 9.
A members preview will be held from 4 to 5 p.m., followed by a free public opening from 5 to 6 p.m.
The Boots Lamb Education Center is open Friday and Saturday 11 a.m. to 5 p.m. and Sunday noon to 5 p.m. The suggested admission is $7. Guild Hall members are free.