'David Henny is the inventor of the Henny shear joint used in building these, including the Boulder & Grand Coulee'
dams
LESSER-KNOWN FOLKS: David Henny is the inventor of the Henny shear joint used in building these, including the Boulder & Grand Coulee
David Henny is the inventor of the Henny shear joint used in building these, including the Boulder & Grand Coulee
David Henny is the inventor of the Henny shear joint used in building these, including the Boulder & Grand Coulee
LESSER-KNOWN FOLKS
dams
LESSER-KNOWN FOLKS