The report of our two-month photographic trip to northern and central Peru, including three weeks in the Iquitos area, as well as Tumbes, Abra Patricia, and many other areas is available at:
http://www.freewebs.com/guykirwan/Northern%20and%20central%20Peru.pdf
(Note the file is c.3mb).
Alternatively, you can go to:
http://www.freewebs.com/guykirwan/tourleadingtripreports.htm
and scroll down the page to the link.