o.k. the images are all from basically two sources. the first one is meeeeee
and the second one is this thing ->
i genuinely don't know how to trace the source. but it's a wonderful cd full of wonderful images. which i think are public domain. or so it says.
so how do you tell which images are my art and which ones are from the cd? good question. i think a good enough rule might be that anything that looks like artwork (as opposed to a photo) that is inside a funny border is my art. if the image is directly and specifically related to the topic at hand that's also a good sign that it's my art. i might also point it out occasionally.
tl;dr use your intuition. sorry.
btw all art with FRACTALS (mostly in bluehome) are done by me using Ultra Fractal 6