Request: photos of wheels

[golf_cart_john]

I'm currently writing a tutorial/paper about drive control. Problem is, most of the example photos of the wheels used in FRC are copyrighted.

Anybody got photos of their wheels that they're willing to let me use? Ideally I'm looking for clear photos, with very little in the background, of the following types of wheels:
-Plain old simple wheels
-Omni wheels
-Meccanum wheels
-Swerve wheels (including the swivel mechanism)

I'm willing to give attribution if you prefer - something like 'image courtesy [your name here]'. If you want attribution, please list your preferred handle or name in the post.

Once the paper is complete I'll post it on CD.

Thanks!