Jennifer, Our images are available for public use, however, as the citation information explains, please cite the photographer and the Alaska Volcano Observatory / University of Alaska Fairbanks, Geophysical Institute when using this image. -Janet -------- Jennifer Margherito wrote: To whom this may concern, My name is Jennifer Margherito and I am a permissions assistant at John Wiley & Sons publishing company in Hoboken, NJ. We are currently publishing a textbook titled Microwave & RF Design of Wireless Systems by David M. Pozar. We wish to use the photo here http://www.avo.alaska.edu/images/image.php?id=17595 of the GPS antenna and would like to know how to go about obtaining copyright permission for this photo. We would greatly appreciate it if you would let us know who we need to contact in order to move forward with this request. Sincerely, Jennifer Margherito Permissions Assistant John Wiley & Sons, Inc. 111 River Street Hoboken, NJ 07030-5774 Mail Stop 4-051C jmargherit@wiley.com TEL: (800) 306-6001 ext. 19389