Almark Practical Guides Narrow Gauge Model Railways & PSL Model Railway Guide 8 Narrow Gauge Railways - Michael Andress 2 books by Michael Andress They are in used condition. The Almark one is torn slightly on the spine and the cover is coming away slightly from the pages but is from 1971. The PSL one is in better condition. Were part of my late father's collection. I will combine postage costs where possible.