H. B. (Harold Bowen) 1901- Willman

• Fine-Grained Molding Sand Resources of Northern Illinois; a Preliminary Investigation; Report of Investigations No. 57
• Feldspar in Illinois Sands, a Study of Resources; Report of Investigations No. 79
• Geology and Mineral Resources of the Marseilles, Ottawa, and Streator Quadrangles; Illinois State Geological Survey Bulletin No. 66
• High-Purity Dolomite in Illinois; Report of Investigations No. 90
• Illinois Building Stones; Report of Investigations No. 184
• Loess Formations of the Mississippi Valley; Report of Investigations No. 149
• Origin of Illinois Sand and Gravel Deposits; Industrial Minerals Notes No. 8
• Summary of the Uses of Limestone and Dolomite; Report of Investigations No. 49