You are free to use IPPOG imagery, video and audio material for educational, scientific, or informational purposes (including photo collections, textbooks, public exhibits and Web pages) provided the copyright is shown as follows:
The IPPOG logo is legally protected. You can download it from here and its rules of usage can be found here. Prior written approval shall be obtained for its use or for the use of any image primarily featuring the logo. Contact email@example.com.