Walter Koeltz & Rup Chang at Waterloo, MI, Summer 1956 (horizontal)

By H.H.B." [Harley H. Bartlett?

Mike Wallace speaking on telephone in office [horizontal]

one of four prints grouped together - taken at same location, about same time?

The Heine Safety Boiler Co. : manufacturers of water tube steam boilers for all pressures, duties and fuels.

Includes index.

Shock tube test time limitation due to turbulent wall boundary layer.

At head of title: SSD-TDR-63-78. Report no. TDR-169 (3230-12)TR-3.