An example of how one can use an image is what I've done with the photo above in the banner, which I created for a page for the Physical Performance class. I found that image in the Wikimedia Commons. The original is here
where you will see that the original photographer - Joe Mabel - has said
I have 'remixed' and 'shared' the image, and I am giving him attribution here and others are free to take my 'remix' and use it if they have a way in which it will fit their needs.
UWM's Digital Collections have a statement about use of the images contained. It reads
Reproduction and Use
Please use this form (not duplicated here) to submit an order for high-resolution digital reproductions of images included in the UWM Libraries Digital Collections. A reproduction fee is charged for high-resolution copies in TIFF.
The low-resolution images available from the UWM Libraries Digital Collections website may be copied by individuals or libraries for personal use, research, teaching or any “fair use” as defined by copyright law. Low resolution images can be downloaded for no charge by clicking on the “download” button at the upper right hand corner of the image and saving to your local computer.
Use fees are charged in addition to reproduction fees when images are published or redistributed. Use fees are negotiated on an individual basis. Requests to publish, exhibit, or redistribute the images included in the UWM Libraries Digital Collections must be obtained in writing. Please contact the UWM Libraries staff at firstname.lastname@example.org for a permission form.