An old friend and local historian, Donn Waters, sent me the link below. It seems that a Union soldier, Magnus Tait, was for a time a prisoner of war. He is here recalling his experiences while in a Confed. prison.
My connection to this story is thus. Some time after the war, in the late 1800s, Mr Tait settled in my hometown in Northern California, Los Gatos, near San Jose. Perhaps he was lured out West by the gold rush. In any event, a street in Los Gatos is named after Magnus - Tait Avenue.
I never knew that until Donn sent me this link.