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Incoming Resources
- The monthly sky guide, Ian Ridpath ; illustrated by Wil Tirion
- The monthly sky guide, Ian Ridpath, Wil Tirion
- Atlas of the night sky, Storm Dunlop ; illustrated by Wil Tirion and Antonín Rükl
- The Reader's Digest children's atlas of the universe, by Robert Burnham ; [illustrators, David A. Hardy ... [and others] ; star charts, Wil Tirion]
- Night sky atlas, the moon, planets, stars and deep sky objects, Robin Scagell ; with maps by Wil Tirion