Trans d’antan is a French producer of O14 loco and rolling stock kits. The website is mainly in French but is fairly easy to navigate. Some of the kits have English assembly instructions.
The O14 kits and ordering details can be found here: modele-reduit-train.com-La boutique -Echelle Oe Note you need to select the Oe14 option either from this Echelle Oe page or under the individual locos
The following images are taken from their website: