Imagery
Sometimes you can't find exactly what you need. GET HELP.
Photography  Textures
We can’t all afford photographers to get the image we require. That’s where stock photography comes in. There are cheap, and expensive options for a student looking for a particular photograph. Here are some tips on how to start your search and options when you’ve hit a dead end.
Free FotoWhat photos can I use legally?
As a student, you (generally) may use any image you find on the web or in books in your projects if:
You are not profiting from the project.
You are not publishing the project in anything other than your portfolio.

You can not publish or profit from any project unless it is all your original work, or you have permission to use copyrighted material.

Here is a link that might explain it more...
University of Maryland

Generally, you will not be sued for copyright infringement because you are only using the images to create "sample" projects. Remember, this is a privilege, so don't push it.

To learn more about copyright protection and infringement, visit these sites:
copyright.gov
Copyright Myths

Royalty-Free: Once you purchase the rights to use these images, you can use it in any application, for as long as you like, in as many different projects as you like.

Rights Managed: These images will continued to be managed by the original owner. You may only use the purchased image as agreed upon with the supplier. Meaning you need permission to use the image again in a different project or for a different application that previously agreed upon.

Free Free Photographs
First and foremost, check free search engines to see if anyone has something you can use on their website. You can click on the “large images” options for high resolutions.
Google.com
Yahoo.com

This site allows you to download photos for free. To use them legally on the web, you must provide a link to their website.
freefoto.com
If that doesn’t work try:
Veer.com (large free “comp” photos)
flickr.com (photo sharing)

Rule

Cheap Cheap
The cheaper you get the less sexy and polished the photographs are. However, if you still can’t find anything that works and are willing to pay a few dollars ($3-$20) try these sites:
photosecrets.com
sxc.hu
mayang.com
morguefile.com
freestockphotos.com resurgere.deviantart.com
burningwell.org
e-cobo.com
istock.com (small cost per image)
fotolia.com (cheap)

Rule

Cheap Cheap Desperate
If you absolutely cannot find the photo you need, try scanning images from magazines and books. But if that doesn’t work, check out these photography sites:

Getty generally only provides subscriptions to designers, but you can call them and get the student rate (about $75 per image).
gettyimages.com

These are not a cheap resources, but they do sell the rights to photographs individually. You can always try to get a student rate.
pro.corbis.com
www.fotosearch.com