I have Google alerts set to alert me whenever Mohill or Leitrim is in the news and one came in last week for old photos of Mohill Railway station for sale on eBay by an Australian seller of all things! The auctions were fairly high quality old photos from about 1950 looking from both ends of Mohill at the old railway station. All photos were from about the 1950s.
I loaded them on my phone and went out one fine day (it’s only around the corner from where I live) to take some modern day photos from as close to the old photo angles as possible.
I went back to the office and loaded each set of then and now photos in Photoshop and aligned them best I could before masking out certain sections to merge then and now versions in some meaningful way. Finally I added some adjustment layers above everything to improve levels, colour and contrast..