By Naylor, Brenda, Stuart
By Jennifer Coldrey
By VanCleave, Janice
By VanCleave
By Osborne, Louise, Hodge, Deborah, Mason, Adrienne, Gold, Carol, Ontario Science Centre, Boudreau, Ray
By Hauser, Jill Frankel, Kline, Michael
By Bailey, Loren
By Claybourne, Anna
By Sara LaFleur
By Donna Latham, Illustrated by Jen Vaughn
By Scott, Marc, Marston, Mick
By Flynn, Mike
By Levine, Shar, Johnstone, Leslie, Harpster, Steve
By Granström, Brita, Manning, Mick
By Cherry, Lynne
By Anna Wilson, Elly Jahnz
By Johnson, M., etc.
By Weltman, Anna
By Hewish, Mark
By Burnie, David, Stone, Steve
By Wilkes, Angela
By Brown, RJ
By Jen Green
By Heddle, Rebecca, Davies, Kate
By DiSpezio, Michael A., Leary, Catherine
By Levine, Shar, Johnstone, Leslie