Hi Gary - That photo is in the public domain, so you can use it in your publication. Photographer/organization photo credit is appreciated. Thank you, Cheryl Cameron -------- Gary Stewart wrote: Hello everyone. I loved this AVO photo of Aniakchak Caldera, and would like to reproduce it in an article I'm writing without pay. With your permisssion I'd like to reproduce the photo, crediting photographer Neal, C. A., and the Alaska Volcano Observatory / U.S. Geological Survey. Can you confirm that's all right? Or please let me know if I need to make another arrangement. Thank you! Gary Stewart -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050