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?
1. Castle Place
Castle Place, Belfast with horse-drawn trams and hackney cabs, in 1875 | Getty Images Photo: Robert Welch/Sean Sexton
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2. Portrush
The harbour at Portrush, County Antrim, circa 1885 | Getty Images Photo: Francis Frith
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3. Warrenpoint
Warrenpoint, seen from Omeath, on the other side of Carlingford Lough, in 1895 | Getty Images Photo: The Print Collector
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4. Bangor
Bangor, seen from Mornington Park, Princeton, in 1895 | Getty Images Photo: The Print Collector