Ångaren Dellen utanför Näsvikens station. Ångaren Dellen byggdes år 1861 vid LINDBERGS MV & VARV AB i Stockholm. Beställare var Hudiksvall Steam Sawing Mill Company Limited of London, på svenska Hudiksvalls Ångaktiebolag, kallat för Engelska bolaget.Båtens mått var 18,20 x 3,53 x 1,93 meter. Ångmaskinen hade 20 ind hkr motorstyrka. 1868 blev ångaren Dellen överförd till det nybildade Hudiksvalls Trävaruaktiebolag sedan Engelska Bolaget avvecklat sin verksamhet. Efter att Näsvikens station tagits i bruk i november 1874, tog kommunikationsbolaget återigen över ångaren Dellen som då fick namnet Bjuråker.

Steam Machines, Engines, Locomotives. In 1781 James Watt patented a steam engine that produced continuous rotary motion. Watt's ten-horsepower engines enabled a wide range of manufacturing machinery to be powered. The engines could be sited anywhere that water and coal or wood fuel could be obtained. By 1883, engines that could provide 10,000 hp had become feasible. The steam engine was one of the most important technologies of the Industrial Revolution.

The train station image dataset is picked from the world's largest public domain archive. Made in two steps - first, curated set, followed by running 25 Million public domain images through image recognition, it comprises more than 50,000 train station images from all countries and times. All images are in the public domain, so there are no restrictions on the dataset usage - educational, scientific, and commercial.