Portrait Photograph of Martin Hans Boyè, by Cornelius, Robert, 1983, Smithsonian Archives - History Div, A portrait of Martin Hans Boyè, a chemist who emigrated to the United States in 1836 from Denmark, which was on display in the exhibit, "Robert Cornelius: Portraits from the Dawn of Photography," at the National Portrait Gallery, devoted to the work of the pioneering daguerreotypist, Robert Cornelius..