How to pour a shower pan - great website
DIY Bathroom Renovation: How to Build a Custom Tiled Shower Pan — Apartment Therapy Tutorials
From your subfloor to a completely tiled shower, this tutorial for how to DIY a shower pan has all of the supply, process and instruction details you need
DIY Walk-In Shower: Step 3- Prep For Tile - DIYdiva
Build your own concrete shower pan -- it isn't nearly as hard as you might think!
Goof-Proof Shower Pan Kit | How to create your own shower pan.
http://www.rvmaintenanceoptions.com/rvshowerpans.php has some information on shopping for a new shower pan for a RV.
Kohler cast iron shower pan
shower pan? Curbless shower with a linear drain at the door ~ http://walkinshowers.org/best-shower-drain-reviews.html
Image titled Install a Shower Pan Step 6