Contract agreement between Wilmer Waldo and John H. Blair Co. Incorporated, June 19, 1911
John H. Blair Co. Incorporated was contracted to do all work necessary in excavating earth from the trenches preparatory to building tunnels "C" and "D", and the Water and Oil Tanks at the Rice Institute.
Rice University Tunnel System (Houston, Tex.)--Design and construction; Rice University--Design and construction; William M. Rice Institute