Proposed three span arch subway of the C. M. & ST. P. RY. over Humboldt boulevard Greifenhagen, P. F Koch, Raymond J. Walin, H. S. Civil Engineering http://www.archive.org/details/proposedthreespa00grei Thesis (B.S.)--Armour Institute of Technology, 1913 B.S. in Civil Engineering, 1913 Armour Institute of Technology 2009 1913 Thesis application/pdf islandora:7638 http://hdl.handle.net/10560/297 CAEE / Civil, Architectural, and Environmental Engineering Illinois Institute of Technology en In Copyright http://rightsstatements.org/page/InC/1.0/ Restricted Access