University of Illinois Urbana-Champaign

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Showing 1–30 of 245 items
Thumbnail for Agstone used in Illinois in 1947
Agstone used in Illinois in 1947
Voskuil, Walter H.; King, Ethel M.

Thumbnail for Clay products industry in Illinois in 1935- preliminary report
Clay products industry in Illinois in 1935- preliminary report
Newton, William Albert; Voskuil, Walter Henry

Thumbnail for Illinois mineral industry in 1944
Illinois mineral industry in 1944
Voskuil, Walter Henry; Stevens, Douglas F.

Thumbnail for Southern Illinois mineral resources and industries
Southern Illinois mineral resources and industries
Leighton, Morris M.; Voskuil, Walter Henry

Thumbnail for Illinois mineral industry in 1943
Illinois mineral industry in 1943
Voskuil, Walter Henry; Stevens, Douglas F.

Thumbnail for Agricultural limestone used in Illinois in 1942 : preliminary report
Agricultural limestone used in Illinois in 1942 : preliminary report
Voskuil, Walter Henry; Stevens, Douglas Franklin

Thumbnail for Illinois mineral industry in 1942
Illinois mineral industry in 1942
Voskuil, Walter Henry; Stevens, Douglas F.