The Model Builder, April 1946Water Tank construction article JA likely used for the Daphetid tank.1 other The Model Builder, February 19481 image Model Railway News, March 1948British magazine7 images Model Railway News, September 1948British magazine, courtesy of David Thomas2 images NMRA Lone Star Region Marker Lamp, 1966 and 19674 images Railway Modeller, September 1968British magazine9 images Miniaturebahnen, April 1973German magazine, death announcement4 images Layout Design Journal, Summer 1997Article: Layout Design Lessons from John Allen by R.L. Warren8 images1 other Vasut & Modell, February 2011Hungarian magazine6 images MRH, October 2018John's grade compensation formula, per Don Mitchell2 images TMS