Steam train enthusiast Michael Clemens of Pershore, Worcestershire, has written his third book about railways in the days of steam, drawn mainly from his and his late father's film archive.
Jim Clemens took thousands of photos of railways and the steam locomotives that worked them, creating one of the most extensive collections in the country.
Steam Trails North Wales is published by Ian Allan Publishing with 125 photos and commentaries from the 1950s and 60s.
The book harks back to the final days of steam and times when there were more lines and stations than today.
The old Great Western route ran across Wales from Llangollen to Barmouth, with stops including Bala and Dolgellau.
Another line from Bala, closed in 1961, ran through the mountains to Blaenau Ffestiniog via Trawsfynydd.
In the summer special trains were laid on to bring holidaymakers from England to the north Wales coast resorts.
Goods carried on the many freight services included gunpowder from Penrhyndeudraeth's explosives factory.
One of the highlights of the Caernarvonshire Rail Tour of 5 May 1957 was a trip on the Nantlle Railway, the last to use horsedrawn wagons.
Inclined planes were used for transporting the workmen as well as slate in the quarries.
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