WebMuseum: Signac, Paul  
   Artist's biography and images of his works.
   http://www.ibiblio.org/wm/paint/auth/signac/

Artchive: Paul Signac  
   Collection of images of artist's works.
   http://www.artchive.com/artchive/S/signac.html

WetCanvas: Paul Signac  
   Artist's biography.
   http://www.wetcanvas.com/Museum/Artists/s/Paul_Signac/

Paul Signac - Olga's Gallery  
   Collection of works of the French artist with a biography and historical comments.
   http://www.abcgallery.com/S/signac/signac.html

Haber's Art Reviews: Paul Signac and Helen Frankenthaler  
   Review by John Haber of 'Paul Signac: Master Neo-Impressionist' at New York's Metropolitan Museum of Art and of Helen Frankenthaler's Lighthouse Series
   http://www.haberarts.com/signac.htm

Paul Signac Biography - RenoirAuction.com  
   Artist's biography and collection of his paintings.
   http://www.renoirinc.com/biography/artists/signac.htm