The Gordons were resident in Paris from 1907/1908 to 1914 and then again after the war until 1931/32.
Very exciting to discover is the wealth of personal connections between the Gordons and many of the artists discussed in "Modern French Painters." A series of revelations about these connections is presented here: http://janandcoragordonart.blogspot.com/ . They include de Max, Carco, Cocteau, Laurencin, Boccioni, Wallin, Maria Rilke, Beckmann, Steichen ("Praps"), Vanderpyl (also known as "Ratapouf") and Myron Nutting, none of these having been recognized before now. See: http://janandcoragordonart.blogspot.com/2015/02/jan-and-cora-gordon-with-eduard.html
Cora Gordon also had a memorable encounter with Édouard de Max, considered, with Sarah Bernhardt, one of the greatest actors of his time: http://janandcoragordonart.blogspot.com/2014/09/jan-and-cora-gordon-de-m-for-edouard-de.html . A number of other Paris acquaintances are mentioned in "Three lands on Three Wheels": in the "Closerie des Lilas, where before the War we used to make merry on Tuesday nights with Paul Fort, André Salmon, Picasso, and all the lights and lesser lights of the Modern Art Movement."