Holland Tunnel Test Facility triptych | University of Illinois Archives
Photographs of the Holland Tunnel Ventilation Test Facility in Urbana, IL, looking north from near the present location of Loomis Laboratory. Visible at far left is the Ceramics Building.
From the verso:
"Composite photo of Holland Vehicular Tunnel Ventilation Test Facility.
"It was constructed in the University's coal storage yard due east of the Ceramics and Railway Buildings, was used and dismantled, in the period Apr. 1 to Aug. 1, 1921. The model duct was 10 feet wide by 400 feet long. A fan horsepower of 300 was required."
Found in RS 11/8/23, Box 1, Holland Tunnel Ventilation Test Facility and Equipment - Photographs, 1921-22
Original triptych is 23" x 7.5"