Marx Brothers "Duck Soup", with Lucy dressed up as Harpo. Lucy had worked with the Marxes when she appeared in a supporting role in an earlier Marx Brothers film, "Room Service". Chico once appeared on "I've Got a Secret" dressed up as Harpo; his secret was shown in a caption reading, "I'm pretending to be Harpo Marx (I'm Chico)". The Marx Brothers were spoofed in the second act of the Broadway Review "A Day in Hollywood/A Night in the Ukraine". In the 1989 film "Indiana Jones and the Last Crusade", Professor Henry Jones (Sean Connery) mails his diary to his son Indiana
Biographies of Karl Marx (1925), Japanese (1930), Spanish (1932), and English (1935). Marx: Man and Fighter is a biography by Boris Nicolaievsky, first published in German in 1933. It was translated into English by Otto Mänchen-Helfen and published in 1936. Some subsequent English editions restore the notes, appendices, and bibliography omitted from the first English edition. Karl Marx: His Life and Environment is a 1939 biography of Karl Marx by Isaiah Berlin, in which Berlin argues that Marx's system of thought depends upon indefensible metaphysical presuppositions. Karl Marx: His Life and Thought is a 1973 biography of Karl Marx by political scientist David McLellan.