Incoming Resources
- Jessica's x-ray, Pat Zonta ; artwork by Clive Dobson
- X-ray machines, by Joanne Mattern ; content consultant, Eric Kearsley, Ph. D., Volunteer, National Museum of American History, Smithsonian Institution ; reading consultant, Jeanne M. Clidas, Ph.D., reading specialist
- Inside in, x-rays of nature's hidden world, Jan Pual Schutten ; photography by Arie van 't Riet ; translation by Laura Watkinson