Piet Potter's first case
By: story and pictures by Robert Quackenbush.
Series: A Piet Potter mystery ; 1
Publisher: McGraw-Hill
Published: 1980
Place of publication: New York
Language: eng
Number of pages: 47
Subjects: Mystery and detective stories
Description: A boy detective uses a blank sheet of paper, a key, and a subway map to help a neighbor solve a puzzling message in a will.