History occupies a prominent place in Ricardo's art.
His paintings on wood panels combine Heraldic symbols which are accompanied by atmospheric Land-and Seascapes. Spare in construction and color, the works according to Ricardo functions as allegory. "They create an emotional dialogue within the classical realm of the collective unconscious"
His paintings have been exhibited at the Whitney Museum, Library of Congress Washington D.C. Kyoto Museum Japan,including prominent private collections.