Philip
King, Amos, Hosea, Micah: An Archaeological Commentary Westminster John
Knox, 1988. pp.180. [Compare CBD's Price] Though out of print, this book tries to do what others do partially, discuss Amos from an Archaeological perspective. If you are serious about Amos, or keen on discovering more about Archaeology and the Bible this book is worth ordering.
Gary
V. Smith, Hosea/Amos/Micah (NIV Application Commentary) Zondervan, 2001. pp.608.