They show life around County Antrim, County Armagh and County Down as it looked all those years ago.
Horse-drawn carriages and steam-powered trams are pictured rattling along car-free streets, while old mills fill the skies with smoke.
From the busy streets of Belfast to the popular coastal resorts of Portrush, Warrenpoint, Bangor and Newcastle, these pictures take you on a nostalgic tour of the region as it looked before the dawn of the 20th century.
Some photos show the area’s unspoilt beauty, while others capture the forces of industry at work.
What do you think of how the region has changed over the last 125-plus years?
17. Belfast
Horse-drawn trams and hackney cabs on a Belfast Street in 1875 | Getty Images Photo: Hulton Archive
18. York Street Mill
York Street Mill, Belfast, circa 1880. The original cotton mill was burnt down in 1828 and was rebuilt as a flax mill. | Print Collector/Getty Images
19. Opening
Crowds at the opening of the Alexandra Graving Dock, Belfast, in May 1889 | Getty Images Photo: J. Magill/Sean Sexton
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20. Tram
A steam-powered tram of the Cavehill and Whitewell Tramway Company, Belfast, circa 1890 | Getty Images Photo: Robert Welch/Sean Sexton