I'm sorry for only getting back tonight but I've been having the delight of scanning a photo album from 1910-1921 featuring the Norman Holland Collection, a local photographer who managed to capture the railways pre-WW1 and after in Omagh. The album was loaned to me and I scanned at very high-res all that was of interest to me. You can see many of these if you're in Enniskillen this Thursday night, given copies to Charles Friel to use for his talk on the 'Ambulance Trains' of Ireland during the period.
Furthermore, here is that much talked about Class G 2-4-0 No.50 at Omagh c. 1910