| Description | Pair of postcards sent to Sonia with a single message by the artist and writer Jean Hélion, in connection with the publication of '<i>Art and Literature</i>', recommending copies be sent to Christian Zervos (of '<i>Cahiers d'Art</i>'), and Pierre Schneider (of '<i>L'Express</i>' and '<i>Art News</i>'), (1f). |