00911cam a2200241 4500 384761047 TxAuBib 20190101120000.0 760422s1976||||||||||||||||||||||||eng|u 76015222 /AC 9780807506448 lib. bdg 0807506443 lib. bdg TxAuBib Warner, Gertrude Chandler, 1890-1979. Benny uncovers a mystery / Gertrude Chandler Warner ; illustrated by David Cunningham. Chicago : A. Whitman, 1976. 128 p. : ill. ; 21 cm. Two brothers take summer jobs at a department store where a series of peculiar events brings them under suspicion. 20190101. Department stores Fiction. Mystery and detective stories. Cunningham, David, 1938-