A collection of children's books, c.1935 - 50 (2)

Two books in the collection are illustrated by the Russian émigré Feodor Rojankovsky (1891-1970). The top one is his Calendrier des enfants, 1936, one of the Albums du Père Castor series published by Flammarion:

These photos show books by another Russian-born illustrator, Hélène Guertik. The top one, Des poissons, 1935, is one of  three animal colouring books she made for the Père Castor series in the mid-1930s: