At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education, Frank G. Thompson, Director. Division of the State Geological Survey, M.M. Leighton, Chief, Urbana
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...
At head of title: State of Illinois. Dept. of registration and education. Division of State geologic...
At head of title: State of Illinois. Department of registration and education. Division of the State...
At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education,...
At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education,...
At head of title: State of Illinois. Dept. of registration and education. Division of State geologic...
At head of title: State of Illinois. Department of registration and education. State geological surv...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois, Dwight H. Green, governor. Dept of registration and education, ...
At head of title: State of Illinois, Dwight H. Green, governor. Dept of registration and education, ...
At head of title: State of Illinois, Dwight H. Green, governor. Dept of registration and education, ...
Published in: Sand and gravel resources of Kane County, Illinois / Douglas A. Block. Urbana, Ill. : ...
At head of title: State of Illinois ... Department of Registration and Education ... Division of the...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois, Dwight H. Green, governor. Dept. of registration and education,...
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...
At head of title: State of Illinois. Dept. of registration and education. Division of State geologic...
At head of title: State of Illinois. Department of registration and education. Division of the State...
At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education,...
At head of title: State of Illinois, Dwight H. Green, Governor. Dept. of Registration and Education,...
At head of title: State of Illinois. Dept. of registration and education. Division of State geologic...
At head of title: State of Illinois. Department of registration and education. State geological surv...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois, Dwight H. Green, governor. Dept of registration and education, ...
At head of title: State of Illinois, Dwight H. Green, governor. Dept of registration and education, ...
At head of title: State of Illinois, Dwight H. Green, governor. Dept of registration and education, ...
Published in: Sand and gravel resources of Kane County, Illinois / Douglas A. Block. Urbana, Ill. : ...
At head of title: State of Illinois ... Department of Registration and Education ... Division of the...
At head of title: State of Illinois. Department of Registration and Education. Division of the State...
At head of title: State of Illinois, Dwight H. Green, governor. Dept. of registration and education,...
At head of title: State of Illinois ... Dept. of registration and education ... Division of the Stat...
At head of title: State of Illinois. Dept. of registration and education. Division of State geologic...
At head of title: State of Illinois. Department of registration and education. Division of the State...