All these snowflakes used in a diagram (interlaced hexagons) were taken by a professor at Cal Tech. I contacted him for permission to use his “real” images.  No monetary gain for me was derived, but I thoroughly enjoyed using the variety that nature has to offer and that he captured on camera and posted online.  Also thanks to Mike Neer who is editor of this CorelDRAW help magazine, as he let me play around with images for a few of the covers.