The Slaying of Jack Clifford Holland: A 1942 Memphis Tragedy

Holland Tunnel 1927: The Sandhogs Buried in Concrete

"The Engineer Who Died Building the Impossible"

America’s First Underwater Tunnel: The Project That Changed Everything

How the Men Who Dug the Holland Tunnel Worked in Compressed Air Until Their Bodies Gave Out

Clifford Holland - appearance

Cavalcade of America - CALV 410728 237 Clifford Holland