00913cam a2200253 4500 62117470 TxAuBib 20010727120000.0 010727s1977||||||||||||||||||||||||eng|u 77005806 9780139586033 $6.95 0139586032 $6.95 DLC DLC DLC TxAuBib Garrison, Webb B. Why didn't I think of that : From alarm clocks to zippers / by Webb Garrison ; illustrated by Ray Abel. Englewood Cliffs, N.J. : Prentice-Hall, 1977. 120 p. : ill. ; 24 cm. Includes index. Presents the story behind the invention of over 60 commonly used items including alarm clocks, jello, tea bags, and zippers. 20010727. Inventions Juvenile literature. Inventions. Abel, Ray.