Paul César Helleu - part 2

Helleu painted by John Singer Sargent

This is part 2 of a 3-part post on the life and works of French artist Paul César Helleu (1859 – 1927), best known for his portraits of beautiful Society women. For biographical on Helleu and more works see part 1.
I'm afraid I do not have dates for all of the following works:

1901 The Duchess of Marlborough, Consuelo Vanderbilt 
drypoint

1901 The Parisienne, Femme du Mode

c1902-04 Madame Helleu sur la plage de Deauville 
oil on canvas 48 x 81.8 cm

1903 The Yacht Etoile

1905 Camara 
pastel

1905 Elegant Woman at the Rail 
pastel

1905 Mademoiselle Vaughan 
pastel

1905 Peggy Letellier 
pastel

c1908 Helena Rubinstein 
etching 70.8 x 53.6 cm

1909 Portrait of a Woman 
pencil and chalk 76.3 x 56.5 cm

1910 Lady with Flowers 
oil on canvas

1911 The Harbour at Deauville

c1920c Portrait of a Young American Woman 
pastel

A Family Dinner at The Ritz, New York

Alice Helleu with their son Jean and a Toy Wheel 
etching 39.2 x 29.4 cm

Woman in a Hat 
etching and drypoint 19.5 x 14 cm

Woman Reading - in Profile 
etching and drypoint 23.5 x 155 cm

Four Head Studies, Madame Helleu with Hat 
charcoal, sanguine and pastel 45 x 61 cm

Head Studies

Head of a Woman 
drypoint