GIA4817676 The visit of the workers\' delegates to the Palais Bourbon (Jules Guesde, Mr Ferroul, Mr Baudin and Mr Thivrier) to the Secretary-General of the Presidency: Mr Martin, during the demonstration on May 1, 1890. (One of the French press at the time). by Unknown Artist, (19th century); Private Collection; (add.info.: The visit of the workers\' delegates to the Palais Bourbon (Jules Guesde, Mr Ferroul, Mr Baudin and Mr Thivrier) to the Secretary-General of the Presidency: Mr Martin, during the demonstration on May 1, 1890. (One of the French press at the time).); by Giancarlo Costa; out of copyright.