FOREWORD 
Salmon is the fifteenth of thirty booklets 
in the Elementary Science Series. It was pre¬ 
pared by the Philadelphia Unit of the Penn¬ 
sylvania Writers’ Project, sponsored by the 
Pennsylvania Department of Public Instruc¬ 
tion. 
This booklet, written by Mark Bartman, was 
edited by Katharine Britton of the Editorial 
office. 
Acknowledgment is made to Dr. Robert C. 
Van Dusen, Superintendent of the Philadelphia 
Aquarium, for acting as consultant to assure 
accuracy of the text and illustrations. 
Cover design was done by Carl Shaffer and all 
inside illustrations by Edward Giordano, both 
of the Pennsylvania Art Project, under the 
direction of Michael Gallagher. 
C. C. Lesley 
State Supervisor 
