Richardson has been recognized as an important naval artist of the twentieth century. Richardson was a Commander, later Captain, in the United States Navy during World World War World War II They had no children. He mostly did original paintings on a commission basis.
There are few signed prints ever authorized by him, but as the official U South Navy Artist during World World War II he did thousands of unsigned prints of naval ships during World World War II for the sailors who served aboard them.
The originals of these ships reside in the U South Richardson did several large murals in the Washington District of Columbia Only two watercolors are known to have been done by him, a painting of the four-masted Spanish training ship, Juan Sebastián Elcano, known as El Cano and a water color of a vintage Riley sport car. Both are held in private collections.
He generally signed his oil paintings in upper case letters "GERARD Richardson", usually in red, on the lower right hand corner with a year date. His famous painting, Heavenly Mist, is a rendering of the sinking of John F. Kennedy"s PT Boat 109 by the Japanese Destroyer, Amagiri.
Currently the work is in the John F. Kennedy Presidential Library.