c1900: Statue of the Earl of Clanricarde (Lord Dunkellin).
Judging by the speed at which it was removed after Independence - not terribly popular!
c1964: A very nice image of Galway, with lots of change evident:
There is scaffolding on the dome of the nearly-completed Cathedral, and the nurses' home is just visible to the right of it.
The railings are still around the Square, and "Woolies" and Wards were both in business.
Just to the left of the P&T mast is St. Mary's College, and to the right St. Joseph's church.
Nearly all of the hills in the background is covered in farmland, where today is urban sprawl.
Early 1970s: Kennedy memorial visible behind the bus advertising Halpin's Tea.
The railings surrounding the Square were removed, and a Kennedy memorial erected.
Also, the Connaught Rangers' Crimean cannons were put beside the rendered and whitewashed Browne Doorway.
c1925: Looking down William St. from about where the Liam Mellowes statue is today.
The stone drinking trough is visible centre-right, and a solitary car stands on the far-right.
Scaffolding appears to be affixed to the outside of Fallers.
c1910: A novelty stereoscopic image of the cattle and hay market at the top of the Square.
(A special viewer is required to look at these images to recombine them into a 3D scene.)
1940s: Lax parking restrictions.
Mid 1920s: Showing the Browne Doorway or ("Ancient Gateway").
The vacant plinth of the old statue of Lord Dunkellin is visible in background.
c1900: Showing cattle fair where taxi rank is today.
Note that the Browne Doorway is not there - it was taken from a building in Lower Abbeygate St in 1905.
The steeple of St. Patrick's church on Forster St is at the top left.
c1908: This card was produced just a few years later, when the Browne Doorway was installed in 1905.
The tool booth at the bottom of Propect Hill is visible. The statue of Liam Mellowes stands there now.
1903: With statue of Lord Dunkellin visible in front of Bank of Ireland. Lots more grass than now!
As usual, Tom Kenny has all the details
here, in a similar photo.
1907: More ornate card showing another view of horse fair. The Browne Doorway is now in place.
c1940: Where's M'Asal Beag Dubh gone?
c1950: Similar view.
c1905: Horse fair, taken from where Richardson's pub is today.
1911: A few years later, and the old lamps had been replaced by ornate electric ones.
Also note the ivy growth on the Bank of Ireland. The cobble-paths are more obvious in this card.
c1930: The Railway Hotel became the Great Southern Hotel in 1925.
Just look though at the telegraph poles in the middle of the square!
1940s: Now renamed the Hotel Meyrick, with a bar called 'Tosh' where O'Flaherty's used to be. Ahem.
c1930: The Railway Hotel, with the old toll booth still standing by the junction at Forster St. and Frenchville Lane.
c1930: A similar vintage card, with some boys playing football on what looks like a partly snow-covered Eyre Square.
c1955: A fun-fair in the Square.