Grandpa's amazing computer /
by Ursel Scheffler ; illustrated by Ruth Scholte van Mast ; translated by Rosemary Lanning.
- New York : North-South Books, c1997.
- 46 p. : col. ill. ; 22 cm.
Thinking that his grandfather doesn't know anything about computers, ten-year-old Ollie is amazed when the old gentleman claims to have one of the world's oldest ones lying around somewhere.