The Smithsonian Institution Traveling Exhibition Service (SITES) is one of the newest subscribers to Green Guestbook.
Two GGb screens will be included in Elvis at 21: Photographs by Alfred Wertheimer as it continues to tour.

“SITES truly believes our collaborative efforts with Green Guestbook will establish a new methodology for gathering information and exploding social networking possibilities far
beyond current trends.”

– Steven Arnold, Director of Information Technology, SITES