When I first came back from an extremely long break in graphic design, I fell in love with some of the new techniques people (especially in the Merlin fandom, in which this applies most beautifully) used, much of which involved stock images and textures. In the process of developing my own style (which I am quite obviously still doing) I gathered an abundance of resources in case I needed them in the future. This extensive list contains every single source, but not all have actually been used. Some day I may actually cut this list to truly reflect what I'd used, but for now I'd rather err on the side of caution than accidentally not name someone who deserves credit.