The Bottin entry of 1923 shows Johannès Christensen as a printer; before 1914 the firm was A. Christensen at Rueil, which published cards of theatrical and religious subjects among others.
Examples of printing are REX cards (qv), some printed by A Christensen at Rueil and later ones by Magenta, the latter name presumably introduce by Johannès.
from Annuaire du Commerce Didot-Bottin 1923 Paris I. The entry in 1930 is identical.
Rex 786 (verso)
.jpg)