Incorrect setting noted / needs correcting

[D L]

Greeting - Hope this is the correct place to note this, but the setting noted for Appointment in Samarra (9780375719202) is listed as Mississippi. Should be the fictional town of "Gibbsville, Pennsylvania". And if fictional towns are not noted here, then simply the state of Pennsylvania.

This is my first request for an edit - so if not done in the correct place or in the wrong format, let me know how to address now and for the future.

-Dan in Arizona