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- Me pregunto por qué cuelgan las estalactitas y otras preguntas sobre cuevas, Jackie Gaff ; [ilustraciones, Peter Dennis ... et al. ; traducción, Alberto Jiménez Rioja]
- I wonder why fish grew legs and other questions about prehistoric life, Jackie Gaff
- I wonder why mountains have snow on top, and other questions about mountains, Jackie Gaff
- I wonder why horses wear shoes and other questions about horses, Jackie Gaff
- Alberto Giacometti, Jackie Gaff
- Me pregunto por qué los potros llevan herraduras y otras preguntas sobre caballos, Jackie Gaff ; [ilustraciones, Peter Dennis ... et al. ; traducción, Alberto Jiménez Rioja]
- JLA, Superman's guide to the universe, written by Jackie Gaff ; Superman created by Jerry Siegel and Joe Shuster
- Looking at solids, liquids, and gases, how does matter change?, Jackie Gaff