Or, you can see a slideshow of most of the cards (almost every card I've got in an animated show.)

Locations 

• The locations of the postcards may be difficult to visualise in some cases, so I've put together a customised GoogleMap to show where most of the images are taken.
• Also, the Galway Today slideshow should help you get your bearings.
• This old cine-film reel from 1965, unearthed by Paschal Newell will give you an idea of how much Galway has changed since in the 1960s.

Dating Postcards

It is sometimes difficult to date postcards, but there are a few rules of thumb the budding vexillologist (postcard collector) can use:

Postmarks, Stamps and Manufacture

• Obviously if the card has been sent through the mail, there's should be a postmark, and if legible, should give you a good idea of the date of the image. Note however that the same image card could be in use for many years.
• If a stamp has a British monarch, well, you can be pretty sure it is pre-1922.
• If the card has "Made in Germany" or "Printed in Saxony", then it is pre-1914, as Saxony was the largest postcard produced in the world before WWI.

Style and Reverse of Card

• The earliest postcards could only have the address on one side, so the often have messages written across the image on the front.
• The Post Office relaxed its rules later (c1900) and introduced the divided back cards for both address and message on the reverse.
• Early cards (pre 1905) often have a vignette-effect and are usually monochrome. 
• Colourised postcards (hand-tinted) were introduced about 1900.
• "Real photo" cards appeared in the 1920s, and were just that - photographs developed onto card, rather than using a printing press.
• Vivid colour (Kodachrome style) photo images appear from the 1950s onwards.

Known Historical Events

• Look at the Churches section to see a 1905 posted card with an image definitely taken well before that as we know the date of the clock installation in St. Nicholas' Church.
• Similarly, we know the Browne Doorway was installed in Eyre Square in 1906, so some photos are obviously before or after that.
• The last thatched cottages in the Claddagh went in 1937. That was the whole appeal from a picture postcard point of view, so you'll never see a Claddagh postcard after that!