"Stock photos that accompany articles do more than illustrate subject matter. They have the power to shape perceptions of entire communities. When used critically, they can chip away at harmful stereotypes, pushing more accurate perceptions and understandings to the fore." from the Gender Spectrum Collection's "About this project."
These image collections feature diverse subjects, but are released under licenses that do not permit no-cost use, sharing, and editing as stipulated by open licenses, such as creative commons. Some also may have costs attached. While reviewing licenses for all images is important, we especially recommend reviewing licenses on these sites before you decide to use their materials.
Review some additional resources for images and open access content. However, not all of these resources are openly licensed, such as those which are library subscription databases and are thus subject to traditional copyright. Please review each database/item for copyright/licensing information.