Caelin on Andrede writes:
All the standard disclaimers apply. You may use them for non-commercial, SCA use and provide attribution to either Richard Threlkeld or Caelin on Andrede somewhere in the publication that uses the picture. I have higher resolution versions in RAW format which means I can clean them up, change the exposure, lighting, and other aspects, and I can print large versions of them. If you want any of that, contact me.