This photo was not included in the Egger-bahn Railcar Article in 009 news as I do not have permission to re-produce it:
(https://forum.009society.com/proxy.php?request=http%3A%2F%2Fwww.eisenbahnfreunde-werl.de%2Fimages%2Fstories%2Frlk%2Frlk31.jpg&hash=6b20eebc0132ad261a47466e960636ec26b21508)
(Originating web page: http://www.eisenbahnfreunde-werl.de/index.php?option=com_content&view=article&id=81&Itemid=486)
(English translation: http://translate.google.co.uk/translate?hl=en&sl=de&u=http://www.eisenbahnfreunde-werl.de/index.php%3Foption%3Dcom_content%26view%3Darticle%26id%3D81%26Itemid%3D486&prev=/search%3Fq%3Dhttp://www.eisenbahnfreunde-werl.de/index.php%253Foption%253Dcom_content%2526view%253Darticle%2526id%253D81%2526Itemid%253D486%26biw%3D1366%26bih%3D673 )
As I mentioned in the article the two identical 1m gauge railcars were built for the Ruhr-Lippe Kleinbahnen (RLK) in 1907 by Waggonfabrik A.G. in Uerdingen, Germany with the power units coming from Lokomotivbau Hohenzollern (works number 2137 and 2138).
The above is not the maker
Many thanks for that, Brian.