have you ever heard of Morguefile? It is not as morbid as it sounds.
It is an awesome photo resource that has “Free images for your inspiration, reference and use in your creative work, be it commercial or not!”
This means that you can freely download and use the pictures in any creative endeavor without infringing on any copyright. The name comes from a newspaper term for storage of photographs that are not being used.
Here are some images i found today.
The wealth of images on morgueifle is wonderful. You can simply type in any sort of image you are looking for, even by pattern, texture or colour and it brings up many,many images. The images are not all professional quality but there are a huge number of quality works to choose from. I also like that you can use the images in any manner except as a stand alone to represent as your own work.
I have manipulated them in photoshop, painted them, drawn them. made charcoal drawings. I will be using this as my resource for imagery for my printmaking workshop this coming week.
Well worth the looksee.
Have a great one!