Encyclopedia Dubuque
"Encyclopedia Dubuque is the online authority for all things Dubuque, written by the people who know the city best.”
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Affiliated with the Local History Network of the State Historical Society of Iowa, and the Iowa Museum Association.
ROCK POCKETBOOK
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ROCK POCKETBOOK. Found in medium to large rivers in pools and areas of reduced flow in mud and sand, the rock pocketbook is threatened in Wisconsin, rare in Missouri and rare throughout the Midwest. Historically it was widespread and common. The hosts for the young include the rock bass and channel catfish.