Our sales reps need to take a photograph under the following
conditions: Target subject is valves and pipes arrayed on a corredor
wall 9 feet high and 15 feet long. corridor width is 5 feet, so the
furtherest the camera can be from subject is about 4 feet. What
camera's offer wide angle photography "out of the box" without haveing
to buy a separate lens?

The fujifilm s9000 offers a moderately wide angle 'out of the box' at
28mm equiv. It also has a low light assist lamp, and offers a superb
photo quality at around 9 megapixels.

"   *   New Fujifilm Super CCD sensor with 9.0 million effective pixels
    * New 28-300mm (10.7x) Fujinon zoom lens with manual twist-barrel
zoom   control
    * Class-leading sensitivity setting of ISO 1600 for photography in
low light conditions
    * 1.8? tilting LCD screen for easy high and low angle shooting
    * 0.01 second shutter lag and 0.8 second start-up
    * Real-time histogram
    * Highlight Warning feature for displaying highlight areas in playback
    * VGA movie capture of 30 frames per second with zoom capability and sound
    * Closed unit design to eliminate dust accumulation on the CCD
    * Hot shoe and PC sync terminal
    * RAW format shooting
    * Dual storage options (CompactFlash and xD-Picture Card)
"

A very good prosumer level camera... Unless your a pro photographer,
this should be more than enough to suit your needs.

Here is a review of a camera that seems to have a very wide angle:

http://www.imaging-resource.com/PRODS/V570/V570A.HTM